What do I need to consider when applying for a booking?

Please read the description and the terms of a booking carefully in advance. If the job meets your approval, apply as soon as possible to increase your chances of acceptance.
In addition to the mandatory fields (hourly rate & availability), you should also write a short introduction to the client in the blank text field of your application. What you say there is up to you: some freelancers introduce themselves, talk about their expertise or describe their motivation for that particular job. The only rules are that it should be accurate, personal to you, and interesting enough for the client to want to know more.