I still think it’d be cool way to open your edit just to set it apart more, but how do you think you make it clear that it was a flashback that BB-8 was having?
A harp riff, obviously.
Lol. Or, BB-8 could beep a little with subtitles that say, “You’re probably wondering how I got here.” then the movie rewinds like an old VHS tape back to the opening scene.