the point of no return?

I'm at a turning point with this painting. I was happy with the oil-wash foundation (left) but the painting went downhill from there because I was torn between the colors of the reference photo and a darker version that I had in mind. I have wiped the pastel off twice, pasteled the whole thing over in violet once, and scrubbed and scratched this "home-made" surface close to the point of no return. I may have to simply rip this one up.