The finishing foot shows whether your embellishment works
The selection contains two different tasks: four variations move an unweighted foot, while the Cross Triple changes the positions of weighted steps. So it is not enough for a movement to look good. After the embellishment, you must be standing on the foot your unchanged pattern requires.
All examples are described for a right-side lead. If you need the left side, mirror the foot instructions. The counts are windows for adding embellishments, not a prompt to embellish every time the pattern begins. Especially before an immediate change of direction, even a small accent can be impractical.
First practice one normal repetition, then the same passage with exactly one variation. Say which foot is taking the weight during the weighted steps, then pause briefly on the finishing foot. If you have to sneak in an extra step, you have added weight or skipped a change. The approach in practicing arms and legs separately helps with this separation.
When dancing with a partner, keep the embellishment small until the familiar sequence feels secure. In the West Coast Swing Underarm Pass, it must not slow down the pass. For guided practice time, workshops at the right learning level are a better fit than immediately trying to copy a fast demonstration.


