Mary....I think it's terrific. Great job, and thanks for sharing the information too about the process.
Curious about size.
I don't see any glaring compositional errors, but if you're not happy with it...Zoe's suggestion seems a good one.
Btw...just to get a better look and really zero in on the composition...
I brought the image up to full size, right-clicked 'copy', then opened a blank word document and hit 'paste'. Then was able to stretch it, intensify it, and change to greyscale (which often clarifies composition I find).
I'll be watching to see what you do if you feel anything else is needed. I would think not very much. Lovely.