OK, I got antsy and so I made my own.
I read some tutorial on warflag.com and then gave it a shot.
This is in the colors I plan on doing, so if you wanted to make it in your colors, just open it in MS Paint, zoom in to 800% and put the grid on, and just replace each color with your own

Its not totally symmetrical, and no, I didnt flip the image for the other side, but Ive printed a few and it looks pretty decent. And it only took me an hour and a half

Print this at 25 to 35% reduction. I printed at 35% and was really happy.