I don't think it's very good. Sorry. It could use more work. The minimal shading and no highlighting makes it very flat and his the pose is very stiff.. I could be wrong but I don't think much effort went to creating this.
He looks like Waldo which is funny, but that's all there is, really.
Nobody said it's very good.
It was one of my first pixel arts, but thanks for your opinion, this makes me get better