Terri Stegmiller here! I love circles. Big or small, circles are such wonderful basic shapes that stand alone or can be the starting point for further design exploration.
I challenged myself to try different setting styles for my circle sketches. I started my circle sketches by first drawing some circles that weren't grouped or in grids of any sort -- pretty much a free-form sort of setting for this first page of circles.
Next I tried grouping circle shapes together.
And for my final challenge, I put circles in a grid-like format but yet layered differing sizes on top of each other.
I found myself liking the last exercise with the grid/layers best and created another one.