If I said "I'm getting better as I go" regarding body work I would be lying. For such simple sounding tasks, being good at this trade is quite an art.
The hatch was pretty warped, probably from the sandblasting and hammering on it was making things any better. So decided to try a technique where you make relief cuts on the metal allowing it room to expand and return to its original place.
Although it took the warp out it gave the panel an interesting shape, that I feel just doesn't look right. I think at this point I'm better off sourcing a clean hatch from the junkyard. Maybe I'll be better off getting some help and letting someone else tackle the more technical repairs.