I believe this needs size to work.
Seeing it full-size on the screen is just working, but I imagine a larger print.
The shadow being so near to the tree would be my only nit,
maybe cropping off the lowest part of it, just above the smaller bump on the left side would do it.
Or you go the dreaded route of local luminosity adjustments .....
P.S.: I just realized I did something nasty to the color - however - my edit is about the shadow ...