You could trim some fat in the writing but I like it so far. For example,
"SARAH (early 20s) sleeps peacefully despite leaving the lights on. Open note and textbooks surround her thin body on her bed. Her breaths too soft to even overpower the electric hum of the alarm clock. It's 1:05."
I added my voice to it, and it may have changed the story a bit since I don't know your plot. A good rule of screenwriting or writing in general is to show rather than tell. As you write more drafts, your text will naturally evolve. Try to cut as many words as you can without losing meaning, or at least add more story with the same number of words.
You and other user may not agree with my choices but I'll explain them:
>No need to say "SARAH'S FACE" because as you capitalize a character's name, traditionally people think of a Close Up
> "It seems that...
This is good enough for an outline or first draft, but it's clunky writing that needs refinement. You readers/audience are smart. You give them enough clues, they will figure out that she "seems to have fallen asleep." For instance, she's already sleeping, and there are opened books next to her implies that.
>"the lights still on." Some writers choose to write like this for a shooting script so it's more like a shot by shot plan, but it's wordy for a "story" or spec draft, so I tried to incorporate this story beat into a full sentence. The reader can easily break the full sentence into "shots" in his/her mind.
>"It's quiet." Sounds a little uninspired and cliche. This is when you can throw in metaphors or similes to describe "how" quiet in order to spice it up and give the reader more information. If it's not important, then you can even cut this.
>"1:05 A.M." Your slug line already mentioned it's night time. The "AM" is excessive.
Writing and editing is an never ending process. I roughly put this together to share and get some feedback. I'm sure another user can improve upon it. Pls no bully.