Rear inner fender lip

[dwcsr]

Personally as long as the inner rolled edge isn't cracked I wouldn't spend a whole lot of time on it. You may see that edge a few more times in the build and never again after that.

If your dead set on it take a piece of round stock that slips into it and use it as a dolly. tap it don't hammer it other wise you'll bow the fender lip. The pit in pic two are from either a pick hammer or a Bullseye pick, it s to raise or lower a point in the panel, from the picture they were trying to lower a buckled section. The last looks like regular rust pitting.

[OrrieG]

Picking hammer used to release tension in the metal so it can be raised or shrank.