I cut random sized circles out of hand marbled fabric. I cut same sized circles out of mottled black fabric and fused the two together. Added batting to the back and stitched around each marbled circle with monofiliment thread. I cut away the batting from the circles ... trapunto.
Added another layer of batting and the backing. Re stitched the circles. Quilted the background in pebble fashion. After stitching the edge with a decorative stitch, I spritzed my piece to block it. The un pre-washed fabric dried and the quilting was enhanced.
Detail of quilting