Thanks Gav

Interesting to watch that with what I have ahead of me 
Amazed at how those original 'blobs' flatten out eventually.

Got me some retarder just today 

Good to hear!!!  You cant do this to all areas and to cover up heavy paint losses.. an airbrush is the only way to go.
I also havent used the paints you have.. they may behave differently, but i can do this with enamels and acrylic lacquers.. so im guessing you should be OK