From what I can see on TV it looks like he has some mechanical flaws. His contact point seems too high. That's something that can be corrected but not likely until the off-season.
Also, in the first 3 games, his mechanical progression was very slow. He seems to have corrected that over the past two games, so that tells me that someone is actively working with him. Thats a good thing.
Given the NCAA coaching restrictions, its tough on kickers/punters as there is rarely anyone on a college staff who works extensively with them. That's why the big changes are done in the off season when a kid can work with people outside of the coaching staff.