this pattern isn't as difficult as it looks. It's sewn in 10 wedges, and they are then put together.
Just a lot of paper piecing and keeping track of the colors. Each "piece" only uses the two matching colors, and they are in opposing pairs, so you'd sew Pink/red/pink and the other would be red/pink/red.
The tricky part is laying them all out so each wedge is assembled correctly.