Import an Image as the Background to your Drawing

Ensure the photo has been saved to the device's photo library

Create a New Drawing

Tap on the Background option - Photo or Camera

Select or take the desired Photo

Tap Create Drawing

Alternatively from an existing Canvas, you can tap the Image icon in the top right corner of the Canvas to take a new photo or select an existing photo from the device's library/

You can optionally choose to Calibrate or Scale your photo at that point