Do not even think about 2 component paint unless you have the correct health and safety equipment and proper equipment. The nicely atomised isocyanates are very bad for your health and you should use proper air fed respirator equipment when using them.
If you absolutely must spray it yourself then do it somewhere warm and dust free, use decent paint and take your time with the prep and the spraying.
Warm the spray can up in warm water 1st as the spray will cool as it comes out of the can which can cause it to condense water in the atmosphere.
Nice smooth strokes starting off the frame and finishing off the frame and do not apply too much in one go.
if you get a blemish do not add more paint. Wait for it harden then rub down the affected area.
Do at least 3 coats - probably more tbh.
Metallics - I always polish before the lacquer as it brings the particles to the surface like you get from propper electrostatic spray equipment.
Lacquer I like it nice and thick and tbh it is the hardest part.
I use polyurethane lacquer on wheels as it is more durable. Halfords do it in the wheel paint section these days.