I had seen this a couple of years ago and drew it out in EQ. It consists of a main block, the Snail's trail, a corner block in the sashing and a 4x8 sashing block that creates the star. These files may help you in seeing the blocks.
Edited to add: In looking at the quilt more closely, I have to maneuver my snail's trails blocks around. I'll probably have to make a new comment for the improved version.
Last edited by Barb in Louisiana; 09-22-2017 at 07:01 PM.