I bought the 28cm deep shelf (other option is 38cm) because it's the perfect depth for my size 5.5-6 shoes and attached these glass doors. Admittedly I don't like the wooden bar across the middle (would've preferred one uninterrupted pane of glass similar to this but without the Japanese cherry blossom print). I also bought 2 extra shelves as my shoes are pretty small.
A few hours later I had an amazing looking shelf ready for my shoes but the weight of the glass doors tipped the entire shelf forward and I was worried the entire thing would smash on the ground. You're meant to attach the shelf to the wall but being a tenant I can't go drilling holes wherever I want so I decided to attach hooks to the top of the shelf and using rope, attach the hooks to picture railing hooks above the shelf. That seemed to help a bit and then once I started piling shoes onto the shelves it became even more sturdy.
Fast forward a few hours and this is what my second bedroom now looks like:
|YES there are still some shoes that didn't fit in the cupboard sitting on the left|