Pam how beautiful, It makes me think of the cube puzzle that you twist around to make it come to a solid color on one side and the same on the other side.....anyway you have chosen the right scappy colors and they all blend in great together...I love the pattern that you have there...and you have done a Great Job and you should be very proud of your accomplishment.....your grand daughter must be a special person in your life to get such a beautiful wall hanging quilt.....a very lucky person,indeed.
I haven't tried the tumbling blocks yet, but would love to one of these days. it looks very complicated....tell me your secret.
scarlett