I'd be tempted to try a compromise layout with the gecko and the sunset. The sunset across the top and sides, and, using the geckos on unequal, mitered, sides and bottom. I sort of see it in my head, but it would be something I'd play around with. The overlay fronds will probably show best on the sunset. Much of this looks as though it could have come from my stash. I'm inspired. Looking forward to your finished creation.