You want the long version? to get anything near to a factory finish is a lot of work.
Strip fork, clean with solvents, sand down, fill chips dents scratches with filler, sand down ( or remove all paint completely and start with an specific primer)
multiple coats of primer allow to harden then rub down,repeat.
multiple coats of topcoat rub down. Repeat
Multiple coats of lacquer rub down finishing with 100o grit then t cut
Or use something like plastikote which will give an OKish finish –
Warm all rattle cans first in hot water