Usually I'll just go for it, but with this I decided to make some CAD (2D) drawings to be sure I got the dimensions correct. I started with the panel and a basic frame to get the general dimensions of the box area. Based on my scrap/cutoff availability, I modify to use what I have (I hate cutting up full boards)!
Either way, I'll sketch everything so I can be sure it will go together and get the joint lines right.
James, Fun factoid about this pattern is you can only make 7 shapes from a combination of kite/dart pieces that allow it to all fit. If you stray, some combos won't show up as problems until a few iterations down the rabbit hole.
I use a full size picture to help me avoid this (still screw up often enough!)
