What's a group of crows called again?

"It opens up" is a bit of a stretch, but the idea is that our witch here is looking into an abyss of birds that emerges from a gap in the trees.

At this point, my style for these challenges is totally shifting over into "Toil and Trouble", a game about witches I made two years ago. I'm fond of the style, but I regret never learning more about shading and light.

Colors selected from UFO-50, because I like it.