I did front-on illustrations of the four species to use as 'paper dolls'—templates that I could use to design uniforms/clothing over. I had done an illustration in my intro doc to show scale with silhouettes based on the species art from the AD book, but with a straight view the size difference between Humans and Yazirians REALLY jumped out; they're much bigger than any of the art I've seen makes them look (just like Vrusk always look bigger than they are going by the listed average size [these examples are all at the listed average sizes: D is 1.3m, H male at 1.9m, Y both 2.1m, and V is 1.5m]).