re: 𝐹𝑙𝑜𝑎𝑡𝑖𝑛𝑔 𝑊𝑎𝑙𝑛𝑢𝑡 𝑆ℎ𝑒𝑙𝑓

I forgot to mention you photography is great. 
Maybe you could put a temporary stop in the wall to stop the shelf from moving on the side that would make it fall. A small brad nail painted the same color as the shelf?