I generally don't do this but here it is a bit confusing. I want to know if this image looks natural enough. I don't want it to have photographic value error.
Photoshopped images of an overcast day.
CFP cooler

CFP warmer

Values of the above

Notan of the above

Original
Comments
I would consider something like this (but without painting the vine that hangs on the path):
But then it recognises there is a path, and it wants to follow this arc.
And then it starts flipping back between the two, which for some reason I find distracting, as I don't know where to focus my attention
Its as if I want to be guided to just one point in the image, for example just the path leading off into the distance, like my doctored image below (which is, I admit, a fairly traditional compositional device, and rather tame compared to your bold swinging vines)
As for the question of warmer or cooler, I think the dominance of the elements of the composition (the vines vs the path) outweighs any consideration of the slight differences in colour temperature. At this stage, at least to me, the colour temperature is a secondary issue.
Hope that makes it clearer.
I see what you mean. Definately @Roxy version looks amazing. I can work on that by adding some vines from a different angle.
I'm facing problem with too much mass on the left side. But removing that it's a predictable composition too. Let my work upon @Roxy composition by making some sketches.
I'm not very adept at this, but I think it conveys what I wanted.
Here I havn't kept it that dark but made it slightly darker. I guess this looks better as well.
What could be a better size for the main painting? My usual 18X24 or bigger 24X30. I am beginning to like painting big ones because it allows my to use full arm motion. I guess 24X30 wou;dn't be an overkill for this.
Here I'm using mostly pthalo green and Prussian blue with a warm yellow. But in the final I'll go with Ivory black, pthalo green, sap green and warm yellow.
Is it ok to do big size for this? Bigger paintings involve the viewer in the scene and easier to do detailing. It should be good.