STEP 9

Sketch in  white tree trunks with sharp edges of chalk.  Start at the top.  As chalk dulls fine lines get thicker.  Tree trunks are thicker at the bottom.  Use long narrow edges of white chalk.  Add variety.  No two tree trunks should be the same in height, angle, thickness or shape.   

STEP 10

Sketch in  black tree trunks as in step 9.

STEP 11

Restate any black limbs on the tree on the left that may have been smudged.

STEP 12

Add a few yellow highlights that cover