As an example, I put the first paragraph of Hemingway's "A clean, Well Lightened Place" into Le Chat and asked it for notes to make it sound like Hemingway. It gave me plenty!

For example:

Tweak: The second sentence is a bit long. Consider breaking it up for more impact:

“In the day the street was dusty. At night, the dew settled the dust.” -> “The old man liked to sit late. He was deaf, and at night it was quiet. He felt the difference.”