For the Leaders: A key trick is to get used to keeping an even pressure with both arms through the whole of her molinette. The instinct, especially when you start to do cool stuff, is not to give her enough pull to help her get around. This pull is from both arms: you pull the left arm, you push the right arm, and it comes from the rotation in the torso (hips, abs, chest).

For the Followers: I think one of the items of vocabulary that separates an intermediate follower from a very advanced follower is how well they do molinette. There can be beginners who do front ochos well. You virtually never see a follower who is not very advanced who does molinette well. Note that we're not saying "an advanced follower", we are saying "a very advanced follower." We have a lot of videos about molinette.