This morning I sketched the angel Gabriel from Botticelli's Annunciation. There was a lot of drapery which I kind of glossed over. Someday I should slow down and give drapery real attention. My big mistake, though, was not thinking through placement at the beginning, so I ran out of room for Gabriel's wings!
Here's the original.
And here's the full painting. Both images are from Wikimedia Commons.