Good captions are mostly rhythm: a short first line, generous line breaks and one clear idea. Styling is the seasoning, not the meal.
Seven quick wins: keep the hook under ten words, use a single styled phrase, avoid all-caps paragraphs, put hashtags on their own line, leave a blank line between ideas, proofread on mobile, and pick one accent style. Font Style helps with the accent step.
Consistency beats novelty. Pick two styles and reuse them until they feel like part of your brand.
Written by FontStyle - more at fontstyle.io.