>>27170980He's right about the reaction image thing, though. If reaction images take up more than 50% of a cap, and it's not a back-and-forth thing with the poster being featured in the cap like that one /v/ cap with the M&M guy (can't find the cap in my folder even though I know I have it), you're doing it wrong.
If the post is truly worth capping, it should be able to stand on its own with minimal reactions in the cap.