It looks like it is pretty simple if you break it down into strips. I think if you laid it out on graph paper it would make more sense. I haven't seen this pattern but I like it and think I will have to try it. I wish I had a way to print out what I am thinking. But I do see strips then sew them together. It would take careful planning to get the colors in the right places to make it look like they overlap.
Lynda