How to Draw Trees: vertical cracks

Column edgesSome trees have prominent vertical cracks in their bark. When you draw trees, you can use a simple observation to help show the dimension and roundness of the trunk.

Evenly spaced vertical lines on a column will seem to get closer together as you near the edges of the column. The same is true of cracks in  a tree. On either side of the tree you will see closely spaced, narrow vertical cracks. Toward the middle of the tree, the cracks are more widely spaced. Lets apply this to a drawing of a Coastal Redwood. Click on the first image to start a step-by-step sideshow.