I looked for a tutorial on crazy quilts, but did not find one.
There are several ways to approach a crazy quilt. The one I have heard of most often uses a foundation to which scrap pieces are sewn, then fancy embroidery stitches are used on or around the pieces.
There are some threads (pictures) which show what people have done using this method. Do a search on the board. You could ask the people who posted those threads if they would post a tutorial. Just a thought...