My new W.I.P. I am going to start the mat and text this weekend. Thought I would see if you guys had any advice on the modeling before I started though. Sorry the camera angels are off a bit.(son was playing in my lap and don’t have time to redo atm.) So whatcha think? 
It is good, but try ctrl+n recalculate normals outside. It will eliminate 
the light and dark strips on objects. I also think, that the circle around the fountain is too angular, try subsurface or circle with more vertex. I’m looking forward to version with materials.
You could add a little definition to the mesh, unless this is a lowpoly model.
At some places the shapes look ‘blurry’.
Be well