Since you've never quilted before, I would suggest a simple stitch in the ditch (or in my case stitch close to the ditch). If you still want to put the spider webs in, the STID stitching will help to hold your solid blocks in place for the free motion work. I would definitely practice on some quilt sandwiches first. Leah Day's website has many, many free motion design ideas and she also has some very instrutional videos on there. Good luck and I know you will do fine!