Well, here are my thoughts. I like your borders, except I think if it was me, I might like an entirely different border to go between the square border, You just finished, and the green square triangles border. My eyes keep bouncing back & forth between your green border & red border with no place to rest in between. My eyes try to go to the center but keep bouncing back to the two outside borders. There is my opinion, sorry but it does sound like more work doesn't it. Whatever you do it will be beautiful.