At this time we are going to work with some slapping. As you will see in the video, I do not move the fingers while I slap or pop. I move the whole wrist and arm. The finger has to be parallel to the string. Do not rebound the thumb on the string. Just aim at the fingerboard in between the strings, letting the thumb just slightly touch the string. Do not strum. For the popping, the hand moves as if you were hitch-hiking, letting the index finger grab the G string.
Thumb Slap (S), Index Finger Pop (P), Hammer-On (H)