I like number one out of the first two.. Then the last.. I feel though that the last two are pretty overexposed and would be much better if it weren't so. But I like the composition of the last photo best out of what you have. I think I would like them much better if the picture was of the full tree but focal point the trunk.. This kind of reminds me of the weirwood.. in Game of Thrones
I would also have liked the whole tree, but it was +/- 15 m tall and I couldn't get back far enough to get the whole thing in, but I just loved the character of the trunk.