im about to sleep, so you're lucky, you get a quick comment.
his face looks like a fish
try to dont put his cheeks in a such evidence, harmonize the shadings, and avoid those excessive burn/dodge cross hatches. only clothes seems good, face must be absolutly reworked, from scratch if nescesary, i can tell you need more concentration, try to have a reference if possible, the shadings are extremly wrong.