To improve my grasp of human anatomy, I'm doing one sketch from a photo reference every day.

Same rules as before:
It has to be done in less than 1 hour, I can only use the one brush (Though I can choose which brush before I start), and I can only use black. No undo, no erase.

I'm not concentrating so much on re-producing the whole picture this time around though, more just trying to get correct looking human body shapes.

This one is of UnderDrag.
We were having a bit of an art jam today. He wanted to draw a heroic pose, so I told him to strike the pose he wanted, and I took a photo of him.
While he and Gonzo were working on his drawing I quickly whipped this up while looking at the photo on my phone for reference.
I didn't have a reference on hand for the Superman logo and I'm not enough of a Superman fan to have done it exactly right but I think it gives the idea well enough.
Underdrag is a dragon, but it's only really evident here in his head and feet.
I didn't draw his wings or tail.

Not sure how long this one took me, but the others were surprised at how quickly it was done, so it can't have taken all that long.