Oh, so itīs unreadable ^^U Itīs not a cap, really is the arm and the hand of the ghoul on the floor,, how can I fix it? or what do you think? thanks!
I think the problem is the ghouls arm follows the shape of the other guys arm, moving it so its separate or overlapping would clear it up. If it is meant to be holding his shoulder you can just cast shadows over the ghouls arm, though the perspective tells me that isn't the case.
Crit on anatomy which you can take or leave being a mythical creature; the ghouls lowest rib (assuming that is a rib, it's hard to tell) would probably be angled more upward as the sternum would have stopped higher up and the rib would be
fused with the one above. The rib cage in general is kind of hard to read.
There is some bad banding happening on the light beam guys (his) right shoulder. I think his arms could be less well defined on the whole, the muscles look too separated. The shadows are so deep below the shoulders it looks like a joint and give the illusion that his arms are bent there (more of a problem on his right one).
Other than that it would just be some nitpicks on the AA in some places (guys hair, on the hanging vine type things on the top right) in particular you AA 45 degree lines which isn't necessary for smoothing, only for shaping.
I really like the colours and the contrast on the ghoul looks great