This one was painted completely top to bottom with spray cans.
But its all in knowing how. And having many years of experience in painting vehicles. Prep work is everything.
If you don't have the proper tools, and have never done it before, then my suggestion is to take it to someone to have it done. It takes a lot of work and a lot of time to paint with a spray can and have it turn out good.
Painting outside requires the correct day, in either early spring or late fall, when the temp is right and there isn't any bugs in the air. The steel has to be above 70 degrees (for paint to stick), but in the shade or it will dry too fast. (dull finish).
'87 YJ, 4.2L built and bored, 8" of lift, 8.8 rear, AX15/NP 231J, Tom Woods drive shafts, Flat fenders, 12,000LB winch, Custom bumpers, Rattle can paint job. Never completed...