Enjoy it so you remember it like you remember your favorite movie/tv show?
I don’t know. Just do it. Remember stuff or don’t do improv.
I love this. I think “Remember stuff or don’t do improv” is a better motto…
It’s not my place to tell this hypothetical person whether or not to do improv, especially based solely on their ability to do openings.
Look for the one thing that sparks your interest in the opening. There’s gonna be one thing that looks like fun to you. That’s really going to be all you need.
If you step out into a scene that somebody else has started, don’t worry about trying to figure out what idea they’re using from the opening. That opening created an idea which is now its own jumping off point. The idea is going to take on a life of its own based on what you bring to the scene. We want that; we want to see big fun scenes spiral out of one small tiny idea.
And be present and be active in the opening. A lot of stuff is going to go in your brain that you won’t necessarily consciously recall. But it’ll be in there and you’ll recognize stuff as it happens.
And of course, seek the opening (or lack-of, as Chris suggests) that works for you and your group. Very physical players will do well with an Organic, very cerebral players do well with a Scene Painting. Each has its own strengths, and each lend themselves to scenes being started a certain way.
But keep doing improv. Improv is supposed to be easy. Don’t stress out that you haven’t figured out how to recall stuff from the opening. Just keep working at it, and you’ll get it eventually.