First, let me say that this is on my bucket list to do. If you look at the quilt, it is 2 different blocks. It should be very easy to add another row. Block 1 is the 3D square block, then the other is the maze. As the pattern is designed, it is
3D, M, 3D
M, 3D, M
3D, M, 3D
To make it rectangular, continue to alternate the extra blocks in the same pattern. The blocks are really big. I don't know the actual size, but I bet they are about 24", so you will be adding a lot of length or width when you do add the extra row.
I really do like this pattern and will be looking forward to seeing your top when you finish it. Good luck!
Last edited by Barb in Louisiana; 05-16-2016 at 08:19 PM.