here HFR, ill give u some tips.
Your Work lacks a certain depth to it. The Atmosphere ( which is yggdrasil and the sky and the moon ) are fairly decent.
- Looking at the trees, they are to small in front of the camera view. Try and make the trees in the front Way larger and try and make it so that you are looking from the ground, not the air.
- The Snow tiles on the hills clash with the envirnment. Try and either make it ALL snow, or no snow at all. Start out with just one even tile.
- fix the hills toward the back, They appear to look artificial. Try and make the hills go straight acroos the picture, and be sure to not make them look round.IF you can, try and extend the Far Z, and place far off mountains behind yggdrasil, and lower those hills. This will allow the picture to have more depth.
The Adivise i gave you may be a bit hard to foolloow, but try, and hopefully this helps you out. Cause im probably not going to have an entry (im too busy

ive basically stopped all of my projects.)