As someone who is emphatically never going to do quilt maths, it might not have been the brightest move to start this quilt by building a frame and only then thinking about what went inside. I got to a solution I was happy with eventually, but as you can see it took a bit of figuring out.
In addition to the question of sizing, it took me a while to find a fabric combination that worked. In the end the low tech method of just plonking pieces down until something worked got me where I needed to go. It took a while, as the orange fabric in my checkerboard has a strong presence and wasn't all that inclined to play nice. I tried prints and plains and lots of combinations but mostly it was instantly clear that they were off the mark. I also considered a centre with more piecing. The reason I went with this simple little line of geese was that it seemed to balance some of the busier fabrics nicely. It also let me introduce several new fabrics into the mix in a painless way.
This is already big for my tiny space, so I have to move it for photos. While I am working on it I fold it in half, either vertically or horizontally, and just work on one edge. It's a strange way of going about things, but so far, so good.