Fat quarter, 1/2 yard or 1 yard chalk cloth
4-6 fat quarters, depending on your color variety
circular shapes and/or compass for tracing
First, gather your materials. To assemble using your sewing machine, you'll need thread, pre-cut chalk circles in the same or varying sizes, larger pieces of oilcloth for the chalk cloth to be sewn onto, and a compass or slide ruler if you need precision.
I cut my chalk dots first and sewed them onto my oilcloth before cutting the oilcloth. However, if you are using a compass or circles of varying sizes, go ahead and cut out all your pieces. I like cutting my circles (like my silvertreeart circles brooches) free form by hand. You may need symmetry - do what's best for you and yours.
On the machine, I used the right edge of my quilting presser foot as a guide around the chalk cloth, sewing 1/4 inch inside the circle, sewing clockwise around the entire circle. Backstitch and trim as you overlap your thread.
I like using the black thread on the chalk cloth. It looks good and hides any imperfections. You may like a contrasting color.