More thumbnail practice, 10 - 20 minuets each. I've had some people asking about my process so I included a step by step. I like to use a few different processes but here is an example of the one I use the most.
Step 1: Find an interesting silhouette. I just go crazy with the brush and eraser to find interesting shapes.
Step 2: This is a combination of creating a new layer with a clipping mask and using the same energy throwing down random marks within the silhouette.
Step 3: Refine my design and clean up the silhouette.
Step 4: Post effects, and done.