WIP Uncharted Jungle Head Environment

This is WIP of a piece I have been working on for quite some time.
The first pic is a raw render from maya and the second is pretty much the same, I just took it to photoshop to do a bit of a concept to see where it's going. The head sculpt is not final at all, just a placeholder. The only thing it's really close to finish is the foreground but still needs more elements to make it interesting (foliage, etc).
Once again I used some awesome concept art by Florent Llamas (https://www.artstation.com/artwork/8wRwq). Once again, I would really appreciate any comments and critique. I hope you enjoy it :D
PS The mayan guy at the second pic, isn't mine, I grabbed him somewhere from google. He is there to give a sence of scale