Would like feedback for how I could do this better next time. Pantry style shelves in a closet, screwed the supports into the plaster (no anchors but thinking that’d be upgrade #1), and then the walls aren’t square so there’s a lot of gaps when I put the shelves in themselves. I do flooring and I know how to trace for difficult cuts but this was not making sense to me. It’s fine for a closet that no one is going to go in but I want to get better at craftsmanship. Here’s a link of the install. https://imgur.com/a/rAVUe3U