After 24 hours I unscrewed the two mdf pieces and removed them and the part from the mold. I then trimmed up the fuzzy edge of the mold with a dremel cut off wheel. Sorry I did not take any pictures during this step. It is very dusty, I suggest a dust mask, safety glasses, and that you rub down any exposed skin with baby powder before you begin cutting or sanding glass, as it tends to be quit irritating if it gets into your pores.
Woo-hoo now we are making some progress...........
Now we can begin to make some parts. I lined the edge of the flange (next to the part) with painters tape. You need to wax the mold. Pretty much any carnuba wax will do. I used a mold release wax. Then you apply PVA in the same manner that you did earlier (with the cheap spray gun at low pressure). You want to put a few coats of PVA to ensure complete coverage.
You then apply gel coat to the mold, again 4-5 layers brushed on with 4 hour wait between layers. 4 hours after the last layer you can begin laying up fiberglass into the mold. Use fiberglass rollers to ensure that you do not have any voids (air bubbles) in the part. You should have something that looks like this.
Wait 24 hours and then you can remove the part from the mold.
The green tint is the PVA, a little water and a sponge and the PVA comes right off.
Trim up the fuzzy edge with your choice of tool (dremel, body saw, band saw, cut off wheel, etc.)
You can then repeat the part making process to make your second one. After you have both parts made, install them on the bumper by sticking them on there, and marking then drilling your mounting holes. My neighbor painted his end caps to match his bumper, but if you had a black bumper you can use black gel coat and it would match pretty well without having to paint it.
The End.
I know this was rather vague, so if you have any questions feel free to ask.