Basic colors added.
That's looking pretty cool. The trees aren't coming off as very "jungly" though, if they're supposed to. The straight stem-round top thing makes them look a little out of scale for some reason. Maybe at least the foreground trees should have branches and rougher foliage? Just a thought. Are you thinking that the ruins in the foreground are kept clear by someone...worshipers or something?
What? You can't have an apple-tree jungle?
I think it is meant to be more illustative than representative though, don't you?
Hi ho, hi ho, it's off to work I go..