how to make a sex tape

Place a camera and your phone, or perhaps multiple cameras and phones, in different places, and then let things happen. Both your partner's and your camera phone. Let everything else unfold organically. You can modify and improve later, so don't worry about being flawless. Consider taking more wide photos, but only enough to show all perspectives and have appropriate lighting. If you want some point-of-view images, you can even wear Go Pros on your head. To avoid looking strange on camera, simply prepare how and when you'll use that. GoPros are not required.

However, some practical advice is to have at least one spare phone so you may shoot from different perspectives and have one of them hooked up to a TV or monitor for a full preview. Professionals do it this way. The rest depends on the editing magic.