This is made just for fun. The grass is not modelled, i used particle effects and hair rendering with cycles. Textures included for the tree (Sapling Generator), grass and soil. The final render is edited with GIMP.
I like the effect you created with the grass and tree, but the blue part of the sky looks odd.
For some odd reason I imagine a little boy and girl in Victorian clothing running down that hill :-)
Thats beautifull, well done