Who or what am I?

This does not represent a specific character because it's simply a doodle. I tried to let some feelings flow.
I sketched out the whole thing at first with pencil and made everything else with only two crayons: red and green. Just something very simple but that I needed 2 hours to finish this. Yeah, I'm pretty slow. XD *sigh*

The picture belongs to me. Please do not use it without my permission.