New Quilt started

I have wanted to do this quilt for ages and now that the drunkard's path and the jewel box quilts are both with my Mom to be quilted I felt I finally could start something new. This is following the pattern called Treehouse from the Modern Quilt workshop by Ringle and Kerr, but my inspiration is far from a tree and the light in it. Can you guess what this was inspired by? When I laid out the first blocks I was feeling sorry for myself because it was not a bit as I had envisioned it, but looking at it with more blocks and in this photo, I think it might actually work. The blocks are bit like potatoe chips, if you have made one, you want to keep going. I have finished almost half of the blocks I need. I have some lovely backing fabric, too.