Hi, Just getting back into this. I have seen quilts of course in cottons, denim, flannel, and did a couple tiny flannel ones for my kids years and years ago, and since then have sewn a lot but not quilted. What I'm wondering...I have boxes and boxes of light and medium-weight "dressy" fabrics that I just love, in a multitude of colours. Any tips/cautions on using these in a quilt?