Great light, eye contact and setting. I would go for a wider crop and if it were mine I might remove the trunk in the BG crossing the deer's right antler.
Must have been very early morning to require ISO 5000. Nice results. It's a beautiful animal, lovely pose, and well-captured. As mentioned above, the trunk at center is rather distracting. I would also consider moving the elk a bit to the left, giving it a bit more room to look into and also, at the same time, getting rid of that less-distracting trunk at the left.
ISO 5000? Nice fellow. A slight crop from the left to remove the tree at the left side of the frame would be good. I agree that it would have been good if the tree would not have been behind the antlers.
Impressive animal. Wonderful light and excellent exposure. IMO it is a bit too tightly framed and I have to agree that that trunks is a bit distracting.