David discovers the omnipresence and properties of air while contemplating a feather that floated to the ground. He learns that air fills spaces, weighs something, and exerts pressure in all ...
ADDITIONAL TUTORIALS 50 Ways to Fill a Sketchbook | Funny Face Doodles: • 50 Ways to Fill a Sketchbook | Funny ... How to Paint People | Watercolor Figure Study: • How to Paint People | Watercolor ...