Great old trees. From a layout standpoint, I'd have led with that next to the last shot. The way the trunk seems to fold, like heavy fabric is visually intriguing. I'd also have cropped in closer to the roots of the tree in that first image.

Full disclosure: I have 25+ years of experience as a graphic designer, primarily in print magazine and newspaper production.

NOTE: That tree with the folded look would make an outstanding monochrome image.