Now MagicMirror gives Sketch App users access to some of the same features to create a perspective mockup.
Prototypes & Mockups
Creating a Perspective Mockup in Sketch with MagicMirror
Origami: How to Build Terrific Prototypes in Minutes
Prototyping apps is hard. The easier they are to use, the more control you lose. Mateo shows you how to create rich prototypes with Origami without coding.