Sorry you didn't receive feedback with your last piece. So I'll do my best to try and give you some constructive feedback.
Right now I don't really see any direction with your work here. What/who is he supposed to be? What is he doing? What is your purpose in drawing him? He gives off the impression of an aimless doodle and that makes it very hard to critique or even provide a decent edit with.
I'm not even sure what I'm doing with this edit lol.
I think, for starters you need to lower the resolution you are working at. Start with some smaller sprites to start building the fundamentals of pixel art. Take a good tour of the forums here and read up on the the many tutorials posted about. Pick a person of whose art you enjoy and start mirroring the techniques you see them use. Also start working on art fundamentals. Draw shapes, plays with colors, study anatomy, gesture, practice still life...etc.
Take your time an work from the ground up and most of all have fun
