Stop in for a cup of coffee

Oh similar to bondo. Gotcha now! So as for sanding down to bare metal, if I follow you your talking just that lip area where the damage is and no further. Then feather/blend the paint into that body line, clear up to that line and then wet sand?
Pretty much, that's it. The contour will hide any paint color differential if you don't go past the upper ridge.

Ramie fender 1.jpg