I don't know anything about Mickey Depre but I made a grandmother's flower garden quilt from hexis that I cut out of that plastic template that you can find at LQS or big box stores. I have a picture of it in my album here. I saw the use of hexis on a Alex Anderson show called Simply Quilts. That's been off the air for quite a few years but I loved that show.... she had so many guests that showed so many fabulous quilting ideas and techniques.
As far as finishing the quilt, you have to bargain with yourself to do that. At least for me, that's the only way I get some done. Good luck.