Who am I? (Point of view). Who is accessing this scene for the reader?
Stay in that person’s head – same applies to omniscient narrator. Stay in their age, their voice, their way of thinking/see/noticing, because of who they are and where they are, both emotionally and physically, and contextually (time of relating this story).
Now, from that person’s viewpoint, i.e. you are him or her:
What can you see?
What can you hear?
What can you smell?
What do you touch?
What do you taste?
i.e put me in that place.
What are you doing?
Show me state of mind/emotions/reactions
What are you saying?
What are you thinking?
With thanks to Susannah Waters for this.