Looks truly excellent--very nice job.
I achieved similar shelves using silverware drawer inserts I bought from Lowe's.
My shelves don't have the "lip" to keep the bottles from gradually creeping forward in response to vibrations of people walking around upstairs (or when my daughter uses her little trampoline jumping thingy), so I periodically have to push everything back. Also, I have the dividers that run vertically when the shelves are mounted to deal with, which limits how many bottles I can fit on a shelf. Mine were easy, but I like yours better.