Fiberglass Bed cover shows fibers. How to fix?

[98kotart]

Hey everyone, I've had this bed cover for awhile now and the guy that painted it did a ****ty job, I am planning to get it redone but I am going to prep it myself. I also had a thought about carbon fiber stripes but I wanted to see what you guys thought and hopefully get some input. Should I strip it and fill it with more resin then sand and prep that way? if I do this I think it might be just as easy to lay carbon fiber at the same time if I go this way. If anyone has done this before, please post pictures/give me some input. Thanks a lot.
You can see the fiber on the bed cover showing through the paint.