A friend of mine has a body shop and came up with a solution to complicated contours that normal masking tape won't stick to or bend to the curves. He uses Liquid Latex. It can be brushed on. Its very easy to trim, you let it dry then take an exacto ro cut it and remove the excess. and after pain it is very easy to remove. The one problem is the only place he knows of that you can get it is an adult novelty shop Other then that it works wonders.
You can get brush-on Latex at a hobby store. I've never tried it as a mask as it takes hours to dry, but it's worth trying. A 16oz bottle costs around 10 bucks.
I should mention that you might have better luck at a model railroad store, not just any hobby store. It's normally used for making molds of scenery objects like rocks, gravel roads, etc.
Cool to hear there is somewhere else to buy it. Now the question is should i tell my friend or keep letting him go to the adult store Think i'll stick with the fun way and let him find out eventually on his own