Here is an ink of Slab that Paul did. Paul is quite talented and his lines are real clean. Almost 2 clean
But the character's form doesn't hold together because of the inconsistencies in line weights. My eye is drawn right to his chin because of the super heavy line there. I should be looking at the whole character, not one insignificant part of him.
Also his head doesn't hold together. The line is thick on one side, thin on the other.
The undersides of the big forms should also have consistent slight heaviness.