Here are my cubes all cut up in the bottom photo and laid out on my bed in the top photo.  You can move the colors around till you come up with what pleases you.   I will be posting later how to cut the black pieces for the edges and how to sew the cubes together.   You will be sewing them in half cube rows going from the top to the bottom.

Once laid out make sure to pick up each row exactly the same and pin them together. Make sure to mark whether you started with the bottom or top piece at the beginning of your pile for reference when sewing them together.