Its only me that can get away with only 3 coats on flo's then! lol
I put one light coat, force dry, then another light coat, force dry, then a heavy coat. And it always turns out bloody bright!!
back with two coats of white and bobs your uncle.
Always use a fairly wide pattern (spray from a little further away). Otherwise you will get blotchy streaks. Not sure if this is the problem you're having?
I use Createx flourecent hot pink, which is quite thin compared to faskolor, which I find too thick for my liking.