Traditionally crazy quilts were made by sewing your fabrics to a foundation piece of fabric, I use muslin. Then the embroidery, silk ribbon embroidery, beading and charms are added. I have never used batting. After all my embroidery and embellishing are done, I add my backing, using thread the same color as my backing , and working from the front of the quilt, I tack the front and back together with tiny discreatly hidden stitches, scattered across the quilt. Then add binding.