At this point you're practically maxed on you're abilities as far as I can see, but you have one consistent flaw I notice in a lot of art. You have a knack of getting minor details wrong on your own art. Often tiems things like buttons, or item locals. The
1. 5 loops on one pole, 6 on the other.
2. middle: button on left side of left leg - it's missing in the left image.\
3. hook on right side in one, left side in the other.
In order to be an undesputable genius, every aspect of an artist's pallete must be clean and precise. At this point, you're just fine tuning. Hope I was of some help.
this one is not as strong as your other characters. he lacks originality and personality, he kinda reminds me of background people from pokemon,you should do something on his face to give him personality imo.unless offcourse you want a character without a real personlity.
perhaps his shoes needs to blend into the pants so he wears thoose rubber boot pants