Most of these drawings are just 5 to 10 minute gestures though the one in the upper corner was actually a 20 minute piece. I have longer pieces but for an animation job we mostly like to see gestures.
You'll note this is a far more eclectic sampling of drawings...mostly because our female models far outweighed the times we had male models. I like this set, everything from ink and a brush to conte to scribbling on a brown paper bag. I think they feel nice and loose but structurally sound.
What do you think sirs?