3d iphone help

I’m working on this floating 3d iPhone zoom transition effect using element 3D and after effects. I have attached a mockup version of it below. I am reshooting for it soon and I just need some advice on how to best film for this effect. How I should go about filming it to make it easiest in post. Also, any tips on the actual editing are greatly appreciated. https://www.youtube.com/watch?v=qThgfa-0scg&feature=youtu.be