What is the Blogging from A to Z challenge and where can I find more participants? Right here.

Fleshing out your Setting helps engage readers. No one likes a scene taking place in a white room filled with nothing. Well, unless that's really where your characters happen to be. Showing us the world they live in helps make the story feel more real.
Some writers get this just right during the first draft. If this is you, you're a magical unicorn and the rest of us are in awe of you.
The rest of us tend of all into two camps. Those, like me, who write bare bones, and those who describe everything in detail. So, as you're reading along in edit mode, ask yourself, what exactly about this particular setting is important? Those are the details you should convey, preferably though the eyes of your character or their interactions with the setting itself.
Is there a particular smell to the room? Such as a smoke-filled bar.
What are they touching and how do they react to it? Their arms stick to the unwashed wooden bar.
What details do they spot and how are they important to that particular character? Maybe the shadows in the unlit bathroom hallway provide a handy place to stab someone.
Sounds provide yet another avenue for description. Your character may hate the throbbing techno music.
What about anything they are tasting? Let's hope no one is licking the bar, because that's utterly gross, but they may be enjoying a drink or a bowl of pretzels.
If the detail you've so carefully described isn't important to setting the scene or shows us something about the character, then we probably don't need to devote words to it. Filling the story with dense paragraphs of description can kill the pacing or cause readers to skim, thereby possibly missing the important details that were buried inside all that.
There have been a couple writers I've worked with that have basked in the history of the world they've created, sharing tourist-like details about buildings and places throughout the story. Maybe those are of great interest to some readers. Maybe not. Honestly, that's the kind of thing I skim or skip completely. Ask yourself what type of readers you are looking to attract and what readers expect from the genre you're writing. Those details might become part of that first draft archive that only you, the author, truly appreciate. Consider that those cut details might, instead, make an interesting series of blog posts when you're ready to publish.
How do you stack up on first draft setting description: too little, too much, or just right?