I don't concern myself with thinking ahead to the finished product. I focus more specifically on what the character is experiencing. Once you relieve yourself of the very arbitrary and always punishing pressure of what an audience is expecting you to do, acting becomes a lot more fun and pure.
I see writing and acting as different parts of the same continuum. Writing is better for intense emotion. If you're very angry about something, you shouldn't present it as strongly when you're acting. But if you're really angry and writing about it, that's the best way to get it out and across.
My feeling is... when you show up to a movie set where there's, like, 50 people standing around and months of preparation gone into it, you want to be as prepared as possible, so you should make a million baguettes. That might not actually help in any explicit way, but it'll make you feel more prepared.
My job when I'm acting in a movie is very limited to playing a role. I'm not evaluating somebody. I'm only evaluating them insofar as they're interacting with me, but I'm not evaluating their skill set and I don't watch the movies, so I'm not aware of the way they're putting things together.