I think you're along that stage where you can walk the line between commissions and requests. You know, something like take requests on occasions but always have commissions open, or requests be only open to certain kinds of drawings and commissions open fir the rest.
Sure you are! You will see yourself improve when you are drawing for money. Believe me! Plus, if people want to commission you, they will have looked at you art beforehand anyway! ^_^
Something along those line, I think. ^^;