OOPS! Forgot to put the floater 2 inch background after the secondardy square of blocks. New measurement is 68x68.
Measurements by round, if you want to make this as a wallhanging measuring 34x34 inches.
4 inch center block
4 inch blocks around the center
1 inch background border
1 inch other border
Second round of blocks
1 inch background border
4 inch final border