Karl Gnass teaches you how to sharpen that pencil like a pro Submitted by Teoh Yi Chie on September 15, 2014 - 6:06pm This could be useful for you pencil users. Karl Gnass teaches you how to sharpen that pencil like a pro. Other videos that you should also check out includes: How To Draw With A Pencil How to Draw The Figure With Line and Tone How to Draw Form with Light and Tone Tags: karl gnass pencils video Read more about Karl Gnass teaches you how to sharpen that pencil like a proAdd new comment