Here's one idea that's worked for me. Pretend that you are the main character in one
of the scenes. Have that character sit down and look around to see what else is there.
Put in as many details as you want to build the picture for yourself, don't forget to
add things like the quality of the light (noon sun, evening dusk, etc.) and the temperature
of the air, is it windy or still, what can you smell, what can you touch and what does it feel like?
All that stuff. But remember, this is just an exercise to open up your scene.
Later you will have to go back and trim away about 85% - 95% of the words, trim it down to just the very essential things.
While you are doing this, think also about your character's reactions to things, especially
to other people. I think this might be the most difficult part for an Aspie, but it's a great
learning exercise. It makes you notice how other people react to things, and by pretending
to be the main character, you are practicing the same kinds of reactions. Pretend that someone
shouts in anger at your main character (you). What do you feel? What happens to the expression
on your face? What do you do?