We are into the activity season, where people do all matter of strange things. This was taken last year, what I am not sure of is whether I have got sufficient separation between the woman and the background:
_CTW3443.nef (54.8 MB)
_CTW3443.nef.xmp (9.3 KB)
These files are licensed Creative Commons, By-Attribution, Share-Alike.
It seems to me that you can blur the background a little bit.
Since it’s almost all green, it won’t be difficult for you to make a parametric mask.
The result (with RT 5.8-dev):
my proposal to separate the jumper from the background with RT dev:
Edit: after uploading my edit, i realized what you mean: you asked for eliminate the branch under her body? You already did a good job in this. 
The raw linked above was shot a little earlier than your image posted.
Yes, I mixed a couple of similar shots. The aim is still the same though.
I accepted the challenge of separating the jumper from the background - very difficult!
Three or four tries in GIMP, none completely successful, but here is my latest. I advise not inspecting too closely!
EDIT more blur…
Fine! ))
For some reason the files are not uploaded, and it’s a pity forum hosting.
We run our own hosting, its likely your browser or machine. Sorry.
What are you apologizing for?
But I don’t remember any problems with Google Chrome that it couldn’t upload something somewhere. And the error message is drawn by the forum interface, not by Chrome’s face. So I tried other browsers. Firefox is the same. But never mind.
