Very curious

Ok so basically I’m very new to the whole pillow humping thing so I have a few questions that I hope you guys can answer:

1. How am I supposed to position the like should I fold it or something. Also should I like put a towel over my pillow?

2. Should I be in my underwear when I do this?

3. This my last question, should I be sitting up when I do this not?

Ik this is pretty weird but thanks for those who answered!💕