Are Blackwing Matte pencils the best? Tested vs Derwent Professional Graphite
23:19
Sketchbook session: 4 exercises to get the most out of your portrait practice
32:44
The Simple Math Problem That Revolutionized Physics
15:11
Sketchbook session: Ingres and opulence
16:40
I never understood why you can't go faster than light - until now!
9:48
John Singer Sargent Oil Pastel Study Process | Paint with me
27:15
The Most Misunderstood Concept in Physics
15:24
How To Draw With Charcoal | Realistic Portrait Drawing
13:04