I found a fun thing when I made a Kaleidoscope quilt. If you take two mirrors about 6 x 8 or so and lay them with the mirrors touching...tape them with masking tape down one side so they open like a book..
You can sit the mirrors on your fabric and open them until you see the full circle of eight images and you can see what your quilt blocks will look like when finished. I have made several and have found sometimes the ugliest fabric makes the most interesting quilt.
Good luck...they are fun. Each block is so unique.