I have no previous auto painting knowledge but have had reasonably successful driveway application of base coat and clear coat repairs with the following stuff.
It took me a while to locate the combination of items and the courage to determine what tools were useful by actually doing the repair.
My rig is too old to economically justify a $10,000 paint job.
I did not have a compressor that could run an automotive paint gun nor a garage to shelter the MH in my suburban setting.
I have had some clear coat peeling and areas of paint fade or damage on my 18 year old rig.
Tools I Have Used:
Paintcolor matching from Auto Paint Supply Store. About $100 for the first quart.
800, 1000, 1500, 2000 grit auto Sand Paper.
Liquid Rubbing and Polish Compounds.
Rotary Buffing machine with foam or wool pads. (I have yet to burn any paint on my Clear Coated MH with this more aggressive $30 buffer.)
Lots of blue masking tape and rolls of masking paper.
Preval Paint Sprayer to apply base coat paint about $5.00 at Home Depot or Auto Supply stores.
What Is The Preval Sprayer? | Preval
SprayMax 2K two part clear coat in a rattle can.
About $23 at Auto Paint Supply stores.
2K clear coat: Spraymax
The good thing is it is hard to make a fiberglass repair that itself is not repairable. Paints sands off. Bondo can be removed. (Over spray however is a pain in the "ykw".)
My theory is a pro can usually fix your errors if needed, which is where you were in the first place before you attempted your repair.
Hopefully the info will help other who are have paint that needs repair as opposed to full replacement and want to attempt the repair themselves.