Tip on removing the wheel arch film?



I'm curious if anyone has removed the OEM protective film on the rear wheel arches? Mine is getting a bit discolored and beat up and I'm going to replace them with new and would appreciate advice on a good/safe way to remove them and also how to prep the paint before adding the new strips.

Note: I'm not interested in having more premium film as xpel etc. put on, I'm just looking for DIY advice for the OEM film.