How to Draw a Rock

Draw small creases on the rock. After that, shade in certain sections of the rock. If you want to be really impressive and innovative, draw the oval, and then instead of coloring it in, crosshatch it. Crosshatching is when you draw many small lines overlapping each other to make it look like stone.

Try drawing it with a flat side, and as always shading helps a great deal. Try to round out the side of the flat surface so it looks like it curve inward. You can also find a flat rock and use it for reference.

You know how to shade on the ground depending on where the sun is. The shaded portion of the rock should be the side that's facing away from the sun (wherever you choose to put it) since that's the part of the rock that wouldn't be receiving any light.