I did a challenge for school where we had to draw or sketch consistently every week for 10 weeks. These are the sketches I did during those weeks.
Anatomy studies from "Complete Guide to Anatomy for Artists & Illustrators" by Gottfried Bammes
Quick figure studies using line-of-action.com
30 second hand studies using line-of-action.com
120 second hand studies using line-of-action.com
30 second face studies using line-of-action.com
120 second face studies using line-of-action.com
Quick sketch from life
Rat sketches inspired by the previous sketch from life
Studies from references for comic
Sketches during anatomy class
2 minute environment studies using line-of-action.com
5 minute environment studies using line-of-action.com
2 minute environment study in color using line-of-action.com
Light study by placing a ball in a photo, suggested by my teacher