Ohhhhh....your quilt is so nice and cheery. I hadn't seen the postings of the progression and went back to see it's made of baby clothes. How special is that!! Great idea! As for basting, generally on smaller quilts I spray baste. It holds everything together quite well. Larger quilts I pin baste (haven't been brave enough to try spray basting the larger ones). :) I like the idea of wavy lines for quilting, it will take some of the pressure off during the quilting process. I tend to get very tense when I SID especially if the fabrics are bulky as you pointed out. No matter what you end up doing, it's going to be lovely! :thumbup: