Hey Adrian,
Thanks for the reply. In terms of how it was done, this was my process.....
First, I covered the car with a brand new plastic drop cloth. They only cost about $1.50, so I don't feel bad about throwing it away after. You really need to cover the whole car because this stuff has a fairly serious over spray.
Second, I used two kinds of tape. Standard old Painters tape for the straight lines at top and the very thin (maybe 2/16") painters tape for the rounded corners. Using this smaller tape makes curves really easy. This tape works perfectly with this method and I'll explain why.
(Let me preface the fact that both scoops were stripped with a quick IPA wipedown once taped off.)
Lastly, the application. Since this has a taped off design you cannot let the dip dry, which is why the tape works so well, the dip should not have time to dry to it. I applied about 20ish layers of plasti dip, using even, consistent and continuous spray patterns. Once the product has built up thick enough (thick enough so that it still looks very wet black) you peel the tape off at a hard angle. Since the product is still wet, you get a very clean and surgical edge to it. Then, just simply let dry.
For this amount of product built up so quickly, complete dry occurs around 30 or so minutes depending on temp. Normally, you would obviously let dip dry in thin layers, but that is only the case when you have the natural edge of the car or whatnot to help break the application edge. Designs like this require a very quick application and quick removal.
Hope this helps. Thanks for the kudos...