Tutorial
Full Adobe Workflow - For Editing 360 Video - Using After Effects, Photoshop & Premiere

Steps
Adding
1. Unfolded 360 Video To Premiere
2. Adding Graphics To Fill "Black Hole" Using Photoshop

Here is a link to the bottom graphic
https://goo.gl/photos/wAfzid5JM1WmurAHA

Here is a link to the top graphic
https://goo.gl/photos/ptocjuPaop5LS5iP8

Template
https://drive.google.com/open?id=0BxDCgFkyy63vREFZbnRLNVExcUk

Here is the link to the 360 metadata tool
https://support.google.com/youtube/answer/6178631?hl=en