how to roll rear fender lips

I have one of those rollers, pretty sure that's the same Eastwood made version I have.

They roll fenders just fine, you can develop enough force to actually push the whole fender out. Rolling the lip is no problem. The non-round wheel openings mean you have to adjust the length of the arm as you go, but it's easy.

The quarter lips in the back would be more difficult, the doubled up layers and spot welds between the quarter skin and outer wheel house would make life a lot harder. I think you'd have to do some prep work on the quarter seam to make it easier to roll before using that style of roller. Totally doable, you just might have to start the bending with a hammer and dolly and then smooth it out with the roller.