Quite an upgrade, nice work!
Work on his face though, especialy the cheekbones. the line you've drawn there looks more like a gash in his head than anything recognizably PART of a head and that's trouble. The eyes and mouth make him look kind of like a chipmunk here, as well.
You've also got some problems with the arm on the head with the forearm lengthening and bending weird to work with the head, while jojo's poses often bend anatomical rules to achieve more stylistic scenes you should try to build in eye for what looks right and doesn't to really make that work. Here, I'd say raise the arm further up so the elbow is more properly squared away with the rest of the arm.
Apart from the redoing the arm and face though, there's not much MAJOR to crit here. Small stuff like the boots being too flush with the legs/pants, perhaps going a bit ballsier with the colors to fit JoJo's notably exuberant stylings... that's all minor stuff right now, though.