i am making a basic garter stitch blanket for my sisters baby but i want to make the edges wavy can anyone tell me how i do this,
You can pick up sts around the edge of the blanket and then increase in each stitch. Here are instructions for a few different looks for ruffles:
http://www.bernat.com/pattern.php?PID=4997&bcfps=1
Just be sure to pick up a few more sts at the corners or to increase some extra sts in the corners so that the ruffle doesn’t pull tightly there.