Sighs, feel like a jerk for being harsh to the OP of this thread. Ummm would advise you study those websites offering the kind of service, you're interested in offering.
Figure out what they are doing right, what they are doing wrong iyo ( in your opinion.) What resources they're using etc. That will give you some idea where to start. And how to match, or beat them in competition.
gdlk.
Also ... would advise listening to some tupac. Most people cant come close to really appreciating dood's lyrics. ( RIP man.) But good sounds regardless.