Operation: Pay It Forward

My Project Linus quilt:A quilted knit blanket.  Have any of you ever quilted with knits?  I love how soft the end quilt is, but there are many things I still need to learn. . .  Too many ripples!Any tips for quilting knits?  I definitely need to add some interfacing next time. . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .I don't think I have mentioned this yet, but