A 'speedpaint' of actual art like this... it's pretty cool. Might be the first time I see it. Wonder if it'd be possible to set up a video camera at such an angle you can actually capture the painting process too some time? That'd be cool to see. As it is you see the layers build, the detail grow, the colors change... but you grow curious as to how each change really came about, and what errs might be camouflaged under the pain. Feels like that'd be both all the more intimate and all the more educational if that's what you wish to derive from it.
Even if the final piece is definitely the big thing here, and the process more of a bonus. Maybe it'd get in the way of the art trying to document things too much. Turned out great.
-cd-