Begin with the supplied schematic first frame. Fixed close camera and stationary teal wand. The one pale soap-film bulge extends a little toward frame right while connected to the existing ring by a narrowing film neck. The neck then closes and one single bubble detaches, drifting only a short distance right. Keep the ring round and unchanged; no extra bubbles, pouring liquid, face, hand, burst or scene cut. Finish with the ring on the left and the one detached bubble still fully visible on the right, then hold.
