You really need to look at the Scrappy Quilt show mentioned above and decide what you like. Some like total randomness. Some like very bright colors on a white background and some like a black background; some like no background, all scrappy pieces just pieced together until you have a quilt top. Some like the look of soft pastels and some can't stand the pastel colors. You need to decide first of all what colors you want in your scrappy quilt. Then you need to decide if you want to make blocks of scraps and sew the blocks together into a top or do you want to sew scraps together into long lengths or some other method. Find a quilt you REALLY like, then find or decide how it was constructed. You should be ready to go on your own - or to ask more questions at that point. In order to have a quilt you will really love, not just be proud you sewed fabric together, know what the finished quilt will look like - in a general sort of way. You won't really be happy if you use a lot of bright colors on a white background and half way through decide you like muted colors on a black ground. I'm not saying a scrappy quilt HAS to be controlled, just know what type of scrappy you like before you start. Do some research and you will be happier.