Drawing of a Leaf

In Visual Arts class we had to draw a leaf using oil or chalk pastels. Only three colors were allowed, and they were the primary colors: yellow, red and blue. The paper was first sandpapered. The leaf was then measured using fingers and pencils, but no rulers. The measurements were then marked  and the outline was drawn. The outlines were then completely filled with yellow. Red was used lightly for the vainy aspect of the leaf and then red was lightly applied to the rest of the leaf. Blue was then used for darkly shaded areas and again lightly applied to the entire leaf. Yellow was applied to the entire leaf once more for a brown look. An eraser was then used for  cleaning around the leaf.  This class was fun and what we had to do was well demonstrated.