1. Don't be a jerk.
2. Be aware.
- Be situationally aware. Some dancers really get annoyed when other dancers twirl their neighbor in a circle left and thus break the connection between the partner pairs; some dancers are probably going to twirl your partner, too, and so you can create a really neat symmetry in the minor set if you do it too. Some people love the drama of dips; other people find the idea unthinkable. Some people have a deep respect for the dance as written, and only as written; other people like to embellish. A lot of being a good flourisher is being able to adjust your dancing depending on who is coming at you. As you dance, you get to know the room. Use that information to enhance everyone's experience, not just yours, and respect it when someone's idea of fun may be different from yours. We wouldn't be dancing if we didn't love it.
- Be temporally aware. Know where you are in the music. If you get an 8-beat swing, don't try to squish in a 12-beat swing flourish. If you've got a crazily long swing, you have more time to experiment and still be on time for the next figure.
- Be spatially aware. This plays into dancing in crowded rooms as well as pulling off some of the more dramatic flourishes. Frequently when someone is twirling particularly fast or is getting inverted into a dramatic dip, they are putting all their trust into their guide (i.e., the lead) that they will have enough room to participate in the flourish safely. To those who are looking into dips: for most of them, bear in mind that you do not get to control the dipee's lower body beyond shifting its center of gravity; if they want to kick their legs up, they can't see the space behind the dipper, and neither can the dipper. Physics tells us that two things cannot occupy the same space at the same time. Experience tells us that bruises (or worse) can result in the attempt.