I am not the one offering services here. My credibility is irrelevant. Yours is very relevant. People would need to see that credibility before using your services. If you can demonstrate that, then good luck with your venture.
You looks like you offer a service to him, lol. But why not if he PM you for just incase. Do you entertain him for good? You see how lack information he had. But you also start on a small rank and little amount of idea just like before. Just asking Master.