Wow! That is really good!! One thing I might suggest doing is that the gates covered in ivy, IDK what they are in the foreground be made bigger, or the path made smaller, because their width is smaller than the path, so it looks a bit odd
I do like the architecture and mood, but the gates are really belong to another scene. They do not match with the rest of the scene - not even shape, color. It is a cool 3D model, but not for this scene. Sometimes less is more 
Just idea. I have question about the roof - is the material shiny on purpose? I kind of like it. Ps. the huge dandelion is also interesting but I think this one was not on purpose or?
it was jst a render i made when iam bored and learning bledner .thanks for the tips i will keep it in mind for other projects.
it was not intentional 
when i made the flower bigger
and roof 's roughness is a bit low thats why the roof is shiny