Few things bother me quite like bad writing that teases you as if it's good writing.
"Jane stood defiantly under the long skylights, a scowling expression cemented on her face."
My dude, are the dimensions of the skylights important here? What is this adding to the sentence? Is there anywhere else on her body Jane would scowl other than her face? A scowl *is* an expression.
There's just a bunch of superfluous stuff rococoed onto this sentence to make it sound more literary than it really is and it's just not needed.
Unleash your inner Hemingway and reduce this to what the reader needs to know: "Jane scowled."