Shaping negative space and suggestions for final model session

[Linda Champanier]

I would appreciate suggestions for this painting for the final three hour model session. It was done from life, oil on canvas, 20 x 16. Digital demonstration ok.

I would like to make the negative space around the sleeve more interesting. I changed the background last night and there are a few places where I haven't blended the background thoroughly enough with the sleeve, leaving some halos that I'll fix.

I'd appreciate any other suggestions for how to finish the painting. I've suggested the pattern on the model's dress and I'm not sure how much further to take the detail. I think it could still use work on the fabric folds.

Thanks very much for any guidance.