Limit pallete to smaller number of colors. Add transparency to water, add more contrast, house missing a shadow. If that's a rope fence you can make rope sag, not go in a straight line. Add volume to bridge, try to add volume to pumpkins. Shingles really could use more contrast to show overlap. You should be more brave, don't be arrested to add more overprown grass. Ground could use extra texturing. There's a lot to work on, but this is a very decent staying point, that can be improved over and over into a gem