IPD = inter pupillary distance. So the distance between the left picture and right picture. Generally try to keep this about 2 - 2.25 inchs. Though there are reasons to have it be difference.

A few other terms that can be useful.

Cha Cha: what you did. Using a single camera to take the two pictures one after the other.

Tow in: change the angel of each shot to converge on the subject. similar to how the eyes do in humans.

Parallel shot: both shots have the same camera orientation just different positions. (Imo the better method. It prevents camara distortion miss match.

Either way it’s a fun picture.