Really you could go anywhere with an intro like that. It sounds almost like your trying to make an ambient song though because the drums are so quiet and wet(which is I assume because its an intro).
The melody doesnt seem to stick to one scale though it starts off sounding like its going to be a happy song and then theres a minor all of a sudden and it sounds sad so maybe work on a slower transition to that.
If your using FL Studio feel free to ask me any questions via NG or my email firstname.lastname@example.org. Cheers,
Logical Defiance a.k.a BreeD