This is just my input. I would widen it and even more background at top and bottom too with the neural background you’re using until I got it almost the completed size. Then put my color borders. My thinking it needs more background so it floats, then one of your pretty colors for a border. I would figure all the borders, top, bottom, sides, however size width you want bit all the same width and then fill in between with background. Just my 2 cents worth.-lol