Click to embiggen.This one took many hours, because I just made it up as I went along. That's a bad and slow way to draw things.
You can thank my friend - your new friend - Ross for the sky's colour pallet and general cloud structure, since I tried to replicate what I saw in one of his photos (because he's a wicked photographer). I happen to think it isn't too far off. Possibly relied too heavily on gradients, though.
Also there's a new post over at Cousin Joel's XTD further examining the Hilariosity-Ridiculosity Curve and it's rather good. Do check it out! And since this post seems to be link-heavy, here's one more.