Make sure that everything is dry, or you will have very bad results.
Now start to apply primer. Do very light spray around 1.5feet away. REMEMBER! spray very lightly. First spray should not cover everything. If it does, you did it wrong.
Leave it dry in the sun for 20-30mins. Make sure it is dry before doing another layer, or you will have dipping/running paint.
Apply other 2 layers in same procedure.
Bake the wheels for extra hour between applying paint and clear coat.
Extra 2 hours before put it back.
Well, that about it.
Good luck
ps. You might already know that you have from bottom to top.....