What the hell are you talking about, this piece has 10x the potential than those other images.
Here's some real advice:
1. House:
i) The details are wrong. You need interior, not exterior.
ii) Add multiple rooms, don't make the house so square.
iii) Show multiple floors of the house. Make it unique!
2. Trees and Bushes:
i) Use less trees, more bushes
ii) Bushes should be in 2s or 3s, even more. Vary between 2 of one type and one of the other.
iii) For ever 3-5 bushes place 1 tree to cover as much area as possible.
iv) If you are going to add flowers, spread them out.
3. Grass tufts:
i) Use the 3 smallest, use the 2 smallest often, with the third smallest sparsely.
ii) Lots of grass tuft, grass tufts are good. Even on dirt.
4. Dirt:
i) More random shapes with borders, also overlap dirt borders onto grass.
ii) There are some grounds in raw that add details to brown dirt (ids 804, 280 and 368)
iii) Mushrooms on dirt
Hope that helps,
Leftwing