Closing means bringing your feet together and transferring your weight
A closing step is a step in its own right, not just bringing your foot up. After the second step, your weight is initially on the foot you landed on. The other foot is free and can be brought in. On three, this free foot comes alongside the foot bearing your weight and takes your weight. If your shoes are next to each other but you are still standing on the same foot as before, the movement is not yet complete.
Fully closed means side by side, not pressed together. Use the inside edge of your standing foot as a guide. Depending on the shape of your shoes, they may touch lightly or stand right next to each other. Don’t force them into hard contact or twist your feet just to make the edges of the soles line up everywhere. A foot that ends noticeably behind the other is not a clean close either.
This exercise applies only to places where your familiar figure calls for a regular foot close. Not every third step in Waltz closes. You can find out how to tell the difference in the introduction to both Waltzes; you can find more figures in the Slow Waltz section. Crossing your feet in certain parts of the Viennese Waltz, on the other hand, is a different foot action and isn’t covered in this exercise.

