If a client likes your demo, they may invite you to audition. In the 21st century, you can download the audition script, record the audition at home, and then send the results to your client over the Internet. Prepare yourself for a life of constant auditions: Even successful voice pros may do many more auditions than actual jobs. But if enough jobs come your way, it's worth it.
Before you do anything though, ask yourself why you want to become a voice actor. If you know upfront what your goals, expectations, and motivations are, you will be more successful. Setting small achievable goals and placing deadlines on them will make sure you stay on track, even if you only want to do voice over as a hobby instead of a full-time career.
Voice actors get paid on a per project or per job basis. Your earnings as a voice actor range from: $35 for a small market radio spot, $150 for a 15 second recording for say a small website, $250 – $350 for a 30 second major market radio commercial (Plus use fees) to about $2000 – $5000 per audiobook, as an established voice talent. There are several ways to calculate how much voice actors get paid, with the most common being the word count of the script. The use of the material is also taken into consideration and whether or not you are granting a license to use your material for a specific duration on specific channels or if you are seeking a fee for a universal buyout.
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.
At this point — unless you're tracking for broadcast applications (where they don't work to peak levels) — consider 'normalising' your recording to an optimal level. Normalisation can be used to push the loudest peak to around ‑1dB and increase the volume of the entire recording by the same ratio. Of course, you can also tighten up dynamic range (the difference between the softest and loudest parts of your recording) by manually reducing the loudest sections of the recording before you apply normalisation. On a final note, if you do plan to use a compressor, then you might as well add gain at that stage instead of normalising.
Fortunately, the internet has made this easier and more open. Most businesses have a logo, brand and a website. This forms the basis of how people get to know them. As a voice-over business you need to recognise that you need to market yourself. This involves ensuring you get your brand, your business, in front of the right people. Marketing though is also about building relationships with customers, not just selling to them. The more customers that use you on a regular basis the more money you can earn and the easier it becomes to achieve a good income.
A demo recording of you doing voice-over work is your CV and your business card combined. If you're applying for a voice-over job, you can send the potential customer your demo via the Internet. Ideally you have multiple demos for different types of gigs. For commercials, clients want to hear 60 to 90 seconds of voice work. If you're auditioning as an audiobook reader, five minutes of demo proves that you can stay in character over a longer stretch of time.