rosey

Hi all
I've been doing a bit of de-rusting on my TF135 at the front edge of the offside sill, having removed the arch liner and cleaning out the crud behind it. I've primed the area and now need to apply top coat. My question is, when do you apply the clear coat, I've read that it should be done before the top coat is dry, also read the opposite. Also what is the best way of blending/polishing. I know it's difficult getting a good finish with rattle cans so would be grateful for any tips anyone has to get the best finish that I can.

cheers
Jon