About 1.5 years ago I interviewed Jonno Riekwel for a school assignment and he has been a part of what I am nowadays. He taught me to socialize and stay in touch with current contacts. That paid of when Jonno informed Pieter Omvlee (founder/creator of Sketch) about my existence and that I have occasionally been using Sketch. Pieter wanted me to design preview content that can be used to demonstrate what Sketch is capable of.
Below is the video that's being used to demonstrate Sketch 3 features using my design.
I was asked to design 2 iOS screens and a landing page, however the landing page has been scrapped from the video because it didn't fit.