Anatomy of the Human Body
How to Draw Lower Back Muscles – Form
Your assignment is to do quicksketch drawings showing the motion and form of the lats and erector spinae.
Make sure you’re identifying the forms of the muscles that are visible. If you can see the ribs or serratus through the lats, show those. If the lat is flexed and you can see a long cylinder on the side, clearly show that form.
Remember, a “quicksketch” doesn’t mean it has to be a simple gesture or contour drawing. You can show 3d forms in a quicksketch like we did in the mannequinization lesson. And a quicksketch doesn't limit you to 3 minutes. You can spend 10-20 minutes on a quicksketch if you need to. 20 minutes is quick compared to how long we’d spend on a long drawing. The objective isn’t to draw quickly. It’s to show a clear representation of the forms of the body and motion of the pose, while not wasting time on details.
I’ve provided reference photos in the Downloads tab. Download those and start drawing!