How do you set a scene? I need advice!

Cutting right to the chase: I'm running a hex and/or dungeon crawl for my next campaign, and I want to force myself to constantly practice setting a scene.

As such, I want to create a checklist that I go through every time the players traverse to a new area.

What I have so far is to, in order describe:

1. Time
2. Weather
3. Scents/Sounds/Feelings (Pick 1 or 2)
4. Sights

Obviously the time and weather are primarily for traversing hexes rather than moving between rooms in a dungeon, so they won't be used all the time. It's hard for the PCs to tell time in most dungeons, even if I'm performing strict timekeeping as the GM.

Additionally, I am debating whether I should describe the scene in a top-to-bottom format (sky to ground) or a bottom-to-top format (ground to sky/ceiling). I feel like in the open, a sky to ground format provides a more cinematic feeling, but in a dungeon a floor to ceiling description provides a more visceral feeling. Top-to-bottom for having the players focus on the surrounding landscape more, and bottom-to-top for having the players picture their character within the scene more. Does anyone share this feeling?

I would love to hear thoughts on this. I think the way one moves through describing a scene is just as is important as it is in literature, as trying to guide the reader's mind all around a scene in a random order leaves often leaves the reader confused and overwhelmed. I've found a natural order of descriptors really helps me picture something clearly.

Do you think there should be anything added/removed, or switched around? Sight typically provides the most actionable detail, so I think it's best as the last descriptor, as I don't want the players to really want to make an action, but have to sit through more description.

However, I do always find it very strange when the GM is spending a handful of sentences setting a scene, including visuals, and then at the end states there's an obvious enemy standing right in front of the party. How do you all deal with this?

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To expand on why I'm doing this: I have a strong internal picture-esque imagination. When a GM sets a scene well, I instantly picture my character in it, and I'm more easily able to get lost in the world.

I have become a heavy improvisational GM, and I want to exercise the scene-setting muscle so I both remember to use it more, and have a simple flowchart I can improvise off of for effectively setting the scene. I feel like building this muscle up through repetition will be the easiest way to remind myself to set a scene whenever it's good to do so.