I have had terrible ones and I have had amazing ones and the few things I can tell you are:

1. Show enthusiasm and don't worry so much about your experience with it.
2. Communicate by not only using words but seeing how they react.
3. Don't be afraid to experiment and continue with steps 1 and 2.

Above all else enjoy yourself and don't put pressure on yourself to be a porn star.

If I were you I would ask him to delete it and ensure he does not have any copies.

Remove from phone, from the cloud, from anything.

Regardless if he shares it or not; guess what could happen?

"Oh I am so sorry; someone hacked my account and it looks like they shared the video."