Communicating between designer and client (or designer and internal project manager!) can involve odd ways of getting an idea across. Here's a funny cheat sheet for designers. Bright Bold Crap really pops!
This pin is similar to the first pin, it has those fine white lines that show the proportion of the bird. I like how it shows the original image and then it transforms into a pixelated bird. Low poly, looks like a fun or frustrating exercise to do.