Building a scene isn't as easy as it sounds, unless you're a daydreamer like me. I have a knack for submersing myself into a place where I've never been, situations I'll never find myself in, with people I've never met. There is much more that goes into a scene than meets the eye.
Dialogue
By the time you get to writing a scene, you should know your character's well enough to know how they speak. It's easy to slip into sounding like a robot. Trying to remember how normal people talk with all their quirks and speech patterns sometimes takes a few rounds of edits, while other times, you nail it right away. By the time you're finished, readers should be able to distinguish the character through dialogue, but I still use dialogue tags periodically or an action following dialogue.
Weather
This is easily forgotten, and sometimes something that can be very brief. Weather can be something very important in a scene, creating ambience or friction, maybe even a reaction depending on what you're going for. Equally, it can be something merely mentioned and you move on. It should, at the very least, be mentioned.
Ambience
This is the mood you want to set for your scene. Is the scene in a restaurant you want to create a sense of romance? Are your characters on the top of a roller coaster that you are going for a sense of anxiety? Words can create the ambience you are going for.
Props
Props are the items in the scene that are vital to it. In my fourth book, The Aristocrat's Wife, there are many scenes (if not most) that have horses. Horses have saddles, bridles, usually a blanket under the saddle . . . those are props. Food, clothing, those can be props.
POV
I've written all four of my books in first person, but there are some authors that use first person but alternate who is the POV by chapter. This is something I'm considering doing this in future books, and I likely will. I'm not sure which ones, though. Point of view can be important for the scene, too.
Subplots
Subplots play a part in the scenes. It can be a side romance, another motive, an illegal activity . . . anything. These can be a major or minor part of the scene, but don't let them overshadow moving the plot along. Be careful not to draw the reader too far off the course of the story.
When I have the order of my scenes, I fill in the gaps with the other details that I don't already have. Each scene has a page where I detail everything out. Chapter number, scene number, characters, location, date/time, props, weather, description and subplots. I also try to note what I want the scene to be memorable for.
Happy Reading!