You all are the best! As suggested, I folded back the triangles on each side and put the pink borders back. Yep, that’s what this needed.
I had some short yellow strips and placed them next to the existing outer columns of triangles. This gives better proportions.
Sadly, I don’t t have enough . I tried a bit of this yellow, but I’m on the fence about it. I also think I do want a wider pink border.
So I’ve made progress, if only in my head. But at least I know what I’m looking for. Thanks for all of your help!
Have a great day!