I used these handouts with my 3rd graders in the Media Center and it helped make them independent and left me open to circulate more during class.
Students make their video in front of the green screen using the regular video app on the iPad. They then use Handout #1 to procure a background image that replaces the green screen. Finally, they use Handout #2 to input their video and the background picture into the DoInk app (minimal cost at iTunes).
Handout #1 - gives students step-by-step instructions on how to save a background picture to their iPad.
Handout #2 - gives students step-by-step instructions on how to use DoInk Green Screen App.
I've used images in the public domain in order to keep this a totally editable document, knowing full well that the steps in the app may change when they do updates.
Please Note: This handout is also included in my Poetry Performance Using Green Screen Makerspace Kit