How to Use Instant Markup to Quickly Edit Screenshots in iOS 11

When you take a screenshot in iOS 11, there's a new feature that's designed to let you open it right up and edit it with Apple's Markup tools.Using the screenshot editing feature, you can capture what's on the screen of your iPad or iPhone and then add text, crop, highlight specific areas, and more.
Using Instant Markup
Press the Home button and the sleep/wake button simultaneously to capture a screenshot.A preview of the screenshot will pop up in the lower left of the display. Tap it to open up