I think the build overall looks pretty good! Possibly add some landscaping to the front of the build as you did in the back? To touch on what NoFckz said above, the front of the build could use some landscaping to give it some more depth.
Looking at it for the first time it looks a little unconventional and far too symmetric. Whilst there are a few differences at the back, I would love to sea a little more detail and change to the front!