I think this might actually be done, which would be a nice surprise. I will let it sit for a day or two and see if it continues to feel resolved. It is an odd sensation, knowing when a piece is done. It can be disappointing to go in and realize you were wrong, it is not quite there yet. But generally for me it is when the work suddenly achieves a different level of presence. Almost like having a guest arrive in the studio.
Here is a detail of the corner.