Sorry Dorothy that you have having a terrible time with your rag quilt.
blue jean denim is so thick and hard to work with into a quilt, at least for me. they tend to be too heavy as well. tell us more about your frustration
perhaps one of us can help you work through this. You said the back doesn't look good, with denim I'm pretty sure you don't need a filler between the layers. Maybe this is your problem...just let us know, we'll help!