i like the large tree

What an utterly cute style, but the little tree is too square.

You have to add more tiles. :)
I like the square tree, but I have preferred a themed tileset (like all squared tiles).

Not bad, by looking at you're previous pieces I see major improvement. I like them all except the middle tree, too square like... If you used the largest tree in the preview I'm sure this would get a lot more views.