Sometimes I do those studies to see how I can draw certain things in this relatively flat style. Especially metallic things are still hard to do for me. So I did this study of the Kingslayer from a photo from HBO's Game of Thrones. I was not going for likeness, but rather tried out different possibilities to describe shining armor. First I used textured brushes on the front plate, which looks kinda good, but is also a bit too realistic for me.
So I used a differnt approach on the helm... which I like better.