My onion skin isn't working :(

i have onion skin turned on for both frames, but like if i draw a line on key 1 it carries over to key 2 without becoming onion skin. it was working fine 10 minutes ago so I’m not quite sure what happened.

@aaaster A screenshot of your Pencil2D editor interface would help visualize the problem better. With your description we can only infer that you are drawing on a duplicate or that the onion skin transparency is set to be fully opaque, so pleas share a screenshot so we can guide you better.

nah never mind lol I was being stupid and clicking duplicate frame instead of adding a new key. thank you though