I bought a carbon fiber fender off of eBay.
It was scratched, the clearcoat was hazed, and it was ugly.
It was just plain, no graphics.
I wet sanded the clearcoat with first 320 grit paper, then 600 paper.
Here is what the fender looked like.
I didn't think to take before pic, but you see how ugly it was.
I taped off for the Corse stripe.
I painted the primer, and then white. I added the pinstripes and painted the red. This is what it looked like at that stage.
Now I peeled off the pinstripe tape, took off the paper.
It looked like this.
So I scuff sanded it all with 600 grit paper. Wet sanding is critical for the final clearcoat. I sanded both the painted and unpainted surfaces.
I put on my "Signature Make it mine" decal.

Then I clearcoated it.
I did two light layers. Sanded it, and then two medium layers.
Here is the finished product.
Here are the materials I used.
320 and 600 grit wet/dry sandpaper.
3M painters tape.
Wagner HVLP Fine Finish Paint rig.
Sherwin Williams Auto primer in white
House of Colors Apple Red
Sherwin Williams Auto Polyurethane Clearcoat