Brenda,
Your quilt is beautiful! I agree with the others who recommend basting versus pins. Two reasons:
1. You have to keep removing or moving the pins to fit in the frame.
2. I have better luck with the layers staying put with basting.
There is a short free video on Sharon Schamber's website that gives an unusual method for basting. I haven't used it yet but I'm going to on the quilt I have under construction now ( that would be one of the quilts I have in progress right now!) Wishing you wonderful quilting!
The address is:
http://sharonschambernetwork.com/media/free/index.html#