Composition in the first is great I really like that picture!! The second one the leaves are in the way of the water fall...so I guess not the best IMOP.
I think they both could use a bump in sharpness. In the first one I see some magenta in between the trees you should remove.
We have different taste so my cc is just what I like to see and with that said, I think they need some more pp to give more depth and I would add in some warmth personally but yeah thats just me and one guys opinion.