Ear needs to be fixed. Neck line isn't defined enough for the angle it's at. Folds on shirt are not realistic. Mask fits his face to well unless he used a most this doesn't make sense. Hat looks like it was placed on his head instead of actually being on it. I get the scratchy look that you were going for but it didn't turn out the best. You should try clean lines or at least clean up the scratches. Alright for first go but it could be easily improved on. I don't mind giving some further tips if you want it.