I think that would be a hard pattern to execute well by pantograph, so I recommend you buy some pattern (groovy) boards. They are pricey but well worth the price, imho. You can buy traditional Baptist Fans (with backtracking, but it's easy with a pattern board) or Contemporary (no backtracking---looks like the one in the sewthankful link pantograph above). Usually you only need to buy 2 or 3 pattern boards to fit any width quilt. Just hopscotch the first board back and forth from first to last position as needed.