So this is quick, but hopefully helpful too.
I cutoff the fenders and added foam which I then sculpted to look something like this.
I wanted to use the profile of the wheel well that someone else came up with, and just reshape the front. Here you can see the foam that I used. Started with some great stuff, didn't like that so here you see a combination of great stuff, polystyrene foam, with drywall mud to fill in cracks.
So here's the process:
1) spread out foil and cut some pieces of glass. I'm just using junk polyester resin here.
2) mix up your resin and dribble some resin onto each of the glass pieces. I had some PEX laying around to mix, but ANYTHING will work.
3) The resin that you dribble on can sit for a second as you get all the pieces wet out, then use a spreader to completely wet out the glass. They will go nearly clear, or brown if you're using this ugly resin.
4) then it's just a case of putting down stickers. The resin is nasty on your hands. I just ran out of gloves, so I just used the spreader and a tongue depressor to lift and place all of those pieces.
Fiberglass doesn't wrap tight corners well, so you can just build up corners from each edge which you might be able to interpret from these pictures.