As the admin of the scenic wallers group i have to give a comment :p
ok it's a nice scene you got there, but sorry, it's been ruined during the execution.
the weakness here is the difference of styles used: you got vector here, realistic texture there, photoshoped grass here, and stock photo there. mixed together, it destroys the attention of the viewer. you have to smoothen your textures so it looks like drawing, use something else for grass than the original PS brush, make a sky that has depth, etc...
to me the best part is surely the stairs, very well done, congratz.
the path leading to it has a realistic texture that flaws it thon and it lacks perspective and depth too.
the hills in the back... dont use cutout filter on stock photo :p you could have painted them, it'd have been great i'm sure.
well, take what i said in consideration, and you'll achieve a much better wall.
good luck