Do you have another person filming on your kill shots? What is the best way to film when you are by yourself ? I have tried a bow mounted phone holder but it seems to have quite a bit of vibration.

We do have people with us from time to time, but most often we are filming ourselves.  We use Fourth Arrow camera arms that strap to the tree and allow us to film our hunts.  For most of us right-handed shooters we hold our bow in our left hand, operate the camera with our right, and simply let go of the camera when it's time to shoot.  It can be difficult to get it all on film at times, but we love the challenge!