Shirt pattern camouflage

Many of the looks I've been seeing online recently have been pop-art style, or even pixelated, flattening the face to make it look 2D. This has inspired me to create a 2D camouflage effect, using Deebs as my model. As he owns a lot of bright and interesting shirts I thought I'd try and blend him into one!

I started by testing on myself, which didn't go too well - I tried drawing a grid on my face which would look straight if you were directly facing me, but I don't think I was neat enough to pull it off. Anyway, this one on Deebs isn't neat either, but the pattern doesn't depend on straight lines too much (luckily for me).