Hi, and welcome to OpenStreetMap! Since you requested a review, I looked over your changes. Everything looks good to me, except that I'd say if the gallery still exists, it shouldn't be removed from OSM. In this case I might say either
1. Have both Main Street Bagels and Aspen Photo Gallery be node POIs (not merged with the building) and let the building be tagged minimally (perhaps just address etc.)
2. Let the gallery be a node POI sitting within the outer Main Street Bagels building way.
Perhaps a good question to decide would be - would you say the bagel shop takes up the whole building, and the gallery resides inside the bagel shop?

Anyway, thanks for your contributions!! Observations from local mappers are super valuable!