-the sky is really visible , make the rgb below 50 (ex. r : 50 b: 30 g:20)
OR maybe you just need to rotate the sky , it really looks ...
-toby's trees are blended , change the material "mode" to transparent , change it using wc3modeleditor. Or maybe you need to use different tree.
Thats only
MY opinion / suggestion.
Still , Good - at least it looks more better but its really basic. Make some harder terrain like using pieces , etc