The shelf must be perfectly symmetrical.. perfect bottle alignment
The shelf must be grouped by house, season, or bottle height
Labels facing forward exactly at 90 degrees
Controlled humidity, away from sunlight, exact temperature (fragrance ICU)
Each bottle stored in its original box like an artifact
You can't stand smudges on glass.. you wipe bottles like you're prepping them for surgery
Inventory log on hand (spreadsheets, databases, photo catalogs)
Color Harmony.. you immediately notice when a bottle's color ruins the entire aesthetic
NONE OF THE ABOVE: My Collection is a DISASTER..