Even if you're mixing yourself, it's better to add EQ and compression only when you can hear how it will sit with the soundtrack or special effects. Ultimately, it comes down to knowing what your voice will be used for and making a judgement. For instance, if I'm recording a tagline for a TV or radio advert, I'll generally run a mic into a nice preamp (where I might add slight tube warmth, and subtle EQ or compression, just to give the recording a bit of 'body'), and I may do a little de‑essing using a plug‑in when performing any edits. However, for e‑learning jobs, corporate videos and so on, I'll tend not to add any creative processing while recording or editing, and will only use the de‑esser ever so slightly.
No place is totally silent, so find the best place you can — even if that means thinking outside the box. I have a friend who regularly records his podcast in his car. He lives in a small house with dogs and kids, so there really isn’t anywhere else quiet enough. He takes his laptop and mic out to his driveway, shuts himself in the car and records. The results are surprisingly good!
Voice over is a production technique where a voice that is not part of the narrative is heard over the action. It’s often used in movies, TV shows, plays, or other presentations. Voice over is an effective way to convey information that doesn’t naturally fit into the plot or the other visual elements that are occurring. Voice over work is read by a voice actor who reads from a script, and it is added to the other elements during production.

The advice we present here is tried, tested, and true. Peter Dickson is the foremost leading professional voice actor in the UK known for voicing the X-Factor, Britain’s Got Talent, Live at the Apollo, The London 2012 Olympic Games and countless brand commercials. In a stellar  career spanning 40 years, he has worked on over 120 TV shows and series, many of them award winning, been a promo voice on 60 TV and Radio channels around the world, been a featured voice actor on 30 AAA game titles, and voiced in excess of 30,000 radio and TV commercials!

Our recommendation is to start small and reinvest the money you make into upgrading your equipment and set up. All clients, whether they are Pixar or just a guy who needs a voicemail message, expect crystal clear audio recordings. You absolutely MUST be recording in a professional recording environment with professional equipment. They are NOT going to settle for less than perfection. Does this mean spending thousands of dollars? Maybe, eventually it does, but not today. What you’ll need to get started:

In late 2009, my wife Simone received an email from Prague in the Czech Republic. The sender, Mirek Jirku, was heading up a project to record voice messages for the foreign‑language versions of the latest Avast! anti‑virus software. Mirek sent us eight messages to be recorded, specified the fee and deadline, and requested a slow, friendly read. He asked us to send separate stereo MP3 files (at 160kbps or higher quality) for each message, specified that we'd have to sign a non‑disclosure agreement before recording, that we'd need to invoice afterwards, and that he'd pay via a wire transfer instead of PayPal (which is often used for international payments).
As the engineer, your key job is to select and set up the recording space, choose and position the microphone, set levels and make sure you're recording a good, clean signal at a healthy level. Like music, the louder the signal you want to record, the less audible the noise floor, but you don't want to have to speak louder than sounds natural, and you don't want to overcook things when tracking: any distortion will be very noticeable on an exposed voice part, and an otherwise great take with digital clipping won't be acceptable. If you notice clipping only when you start editing, software clip restoration tools might help to make the take usable, but it's not going to be perfect. Remember that although you may have needed to record 'hot' on analogue tape and older 16‑bit digital recording systems, modern 24‑bit A‑D converters can accommodate a much wider dynamic range, so you no longer have to track so loud: you can leave much more headroom.
The annual income of a voice talent varies greatly from person to person and from year to year. When you’re just starting out most of what you earn from voice over work should be reinvested into your studio, demos, and marketing efforts, so at this stage you will need a second job to support your daily living expenses. Once you start building a portfolio of clients, you’ll see your regular earnings grow and will really start to get a feel for the potential your voice over business has. In time, you’ll be enjoying a satisfying career.
Some of you might be wondering about the difference between voice over and narration. The short answer: not much. In most cases, you may use voice over and narration fairly interchangeably. However, to be technically correct, narration typically refers to an audio vocal that describes all the action on screen or tells a story based on what’s happening, while voice over may or may not describe as much action and is often more instructional in nature.
Before you get down to the nitty-gritty, though, I recommend doing a test recording to ensure your equipment works properly and your audio levels are strong. You don’t need to record the entire script, but a few paragraphs will give you enough to ensure that the audio is clear, at an appropriate level, and doesn’t include any stray or ambient noises.
Always keep it professional. A client may not have a budget that works within your rates presently, but one day they may have a project with a much larger budget and think of you as the talent to circle back to! It never hurts to politely decline when a project has too low of a rate and exclaim, “I would love to work with you in the future when our rates align!”
Also listen for sibilance. Strong 'ess' sounds are best corrected at source, by using good mic technique, but sometimes they're unavoidable. If you hear an 'ess' that really sizzles in your recording, you can manually reduce its volume. You can, of course, also use a de‑esser, but do be careful, as applying some de‑essers to the entire audio file can alter the sound of your recording. It often works best to apply them to short sections, either offline or using automation. My preferred de‑esser plug‑in is the one sold by Eiosis (www.eiosis.com),Make sure you record some silence at the end of each take. That way, if a great performance suffers from noise issues, you have something to feed your noise‑reduction processors. Just don't rely on this technique too much! which cleverly separates the esses from the rest of the audio and allows you to manipulate them independently. If you want to learn about some more advanced strategies for de‑essing check out Mike Senior's article from SOS May 2009 (/sos/may09/articles/deessing.htm).

One of the most important rules is to ensure you value yourself as a professional. If you undervalue your own service it can be hard to later charge for the correct rates. A professional voice-over should cost a minimum amount, even if you’re new. If you allow clients to low-ball your work from the outset it will continue to set the expectation that they can get a voiceover from you on the cheap. This can then mean the difference between making a living and paying bills or not.

"We recorded two or three takes of each story, and within those takes there were some pick‑ups [overdubs] for certain lines. When I was editing, I used takes that gave the best delivery, had the least movement or other noise, and provided the most provoking images. In some cases [we used] the first take. Sometimes, after saying a line over and over, one starts to lose the meaning of the line. Pick‑ups should go back to the top of the sentence, making editing much easier.”

When asked by someone outside of the industry how much I’m compensated for a commercial voice-over, I can see their eyes grow large with excitement. It may sound like a large number for two or three hours of studio time, but what is not understood is the investment in time, money and education that it takes to begin and sustain a voice acting career. As voice-over professionals, we need to remember (especially if we are setting our own rates) that the time we have spent in classes, coaching sessions, and our booth add up to our expertise in this field. When setting your own voice-over rates, or negotiating those set by producers and/or clients, you need to not only consider your session fee (the time spent in the booth recording the specific copy), but also all the training you’ve acquired and the investment in your home studio (which helps make your client’s job much easier).