Great job! Your paper pieced portraits are super but check the batting quilting requirements. I would quilt around the edge of the faces and if needed, add a little quilting or thread painting inside them. OR I might use thread the matched the background in the portraits and stitch with batt just behind the squares for a trapunto effect, trim away the extra batt beyond the stitching line and the sandwich the whole quilt. It would make the portraits stand out a bit especially if you stippled the background around them.