I don't like the border you have either--too busy. plain would be better with the yellow border and a yellow binding and just the luminous yellow. dropping the cornerstones also would be better. make sure you show us what you decide. I like the arrangement you have--looks like stained glass windows. maybe make it 108 x 108 and widen the rectangles a little more. will be gorgeous looking no matter what you decide. I don't have enough ambition to design one like that altho I like it.