Will Allred, the ownder of this sketch, apparently took pictures while I was sketching. Sneaky monkey.
I used Photoshop to fix the foreshortening and perspective on the photo, and create a presentable image of the pencils. Here's Dejah, before the Pitt pens and the Copics were fully unleashed.
What do you, or did you, use to get a good grasp of anatomy? You're a little unorthodox in how use boobs for your drawings without making them look weird.