My first experience in Terragen 2 Demo
Nice rocks and overall a nice composition, especially for a beginner, well done.
I'd make the trees lighter/more visible, and up the quality of the clouds.
The trees appear to be either very small or very far away (Peter Kay joke :D ), which makes it hard to determine the correct scale of the scene. Are the trees very far away but with huge rocks in the foreground or are the rocks medium/small size with tiny trees close by? Hard to tell.
I agree about the trees, I saw myself then. :(
I am happy to listen to all comments. It would do me good.
You can easily judge the size of trees by adding a standardized object near one of the trees after populating, like a card with a certain height (say 10m) in TG pro (don't know if it's in the demo version), or a landmark (which won't be rendered anyway).
Might be good to extend the population to the front, so you have some trees among the rocks.
But it's agood start!
Don't worry about all this. I use TG 2 for several months now and somehow I still can't make rocks looking that good!
Looks like maybe you should try re-seeding the clouds and see if the shadow could be placed elsewhere. Maybe then, you might have and lighted view of the trees.