If you are doing the Double Dutch Rose Pattern. I would photo copy a piece of the quilt, then take a piece of fabric or paper and cover the section leaving at least 1/4 to 1/2" all the way around. I would have it more 1/2" or larger. Stack your fabric right side up and use the piece you just created as a template to put on top of your fabric and cut the shape. Do this for each shape and color. Remember to keep the fabric on grain.
This is why I like Judy Niemeyer's quilts...you precut all the fabric. Hope this helps.