If you want to show that a scene changes within a chapter, use a row of three asterisks on an extra line, set on a line by themselves. It’s one of the most widely used typefaces. There are other acceptable fonts, but Times New Roman is a standard in book publishing for its legibility and classic look. Font throughout should be Times New Roman, 12 pt. Manuscripts should be set up 8.5″ x 11″ with one-inch margins on all sides. (APA formatting for academic manuscripts is a different animal.) If you need help with the mechanics, I’ll provide that later. Here’s how to format your novel or memoir so it looks professional.
Part of my job as a copy editor is to fix the formatting to publishers’ standards. Authors submit manuscripts in a hodgepodge of formats.