Seriously, that was the first thing that I thought of when I saw Reshiram's official art's posture.
This be a really tough artwork actually. Took nearly all day (as opposed to Engetsu and Providence, which both took less than 4 hours each).
In order to make Reshiram not look like a plain white blob, I had to crank up his albedo several notches. Which meant a lot of softlight spec layers. And not just for Reshiram too. Total layers used: [link]
Reshiram looks so happy 8D
and the idea is great too >w<