Linbails: It would be a real shame not finish that, its great. Kind of odd that you ended with slightly different measurements but I don't think the eye will be able to detect that 1/8th inch difference on two of the borders. Pick a color that you will like as a "frame" to what you've done so far. You will want to add two inches on each side, you can always trim so that it is a 36.5 inch square. Remember the seam allowances. The border piece should measure 2.5 inches, this will give you a total finish amount of 2 inches on those sides hence 36.5 inches after you trim the block to square.