According to 3 copy editors at the magazine where I work, "from" should always be lowercase in titles. I'm just sayin'.
Lots of room for opinion, but at my magazines we also consider context in the sentence/phrase, and what is around it, and even whether the proposition is at the beginning of a line due to wrapping. We consider how it looks, and how it reads. When a coverline is wrapped to two lines, and the second line begins with a proposition (often intentionally because we try to wrap at phrases or other logical points) we will capitalize the proposition so both line begin with a capitalized word. Not doing this looks like a mistake, even if "technically" correct.
Also, I've been typing in a zillion music tracks from vinyl albums, and it's almost a 3-way split: Lowercase articles/propositions, capitalize every word, or ALL-CAPS every word. No consistency.
And there's always an exception: I don't think Hemingway's book title is ever (correctly) written "for Whom the Bell Tolls".
Though I have seen it as "For Whom the Bell Tolls", but usually "FOR WHOM THE BELL TOLLS" -- the classic way to dodge the question.