Here's the only trick that I know for body repairs
You can also use compressed air and a hairdryer.
I had a rental car for a month with cloth seats and put a pretty gnarly cigarette burn in the drivers seat. I took a razor blade to an inconspicuous piece of similar fabric under the seat and gradually shaved off some fibers. I took some superglue and put it in the cigarette burn and carefully placed the carpet fibers into the hole. The result was remarkably better than I had anticipated, there's no way you'd notice it unless it was pointed out. Cigarette burns happen, thought I'd share this easy fix.