Tap FacePaint from the list of canvas presets and a blank canvas will open with no layers. To start FacePaint, go to Gallery and hit + to create a new Canvas. For example, by zooming in on a part you like. You can use this to change the composition of your piece without changing the overall dimensions of the canvas.

The area inside the overlay will automatically grow or shrink to fit that size. If you need to change your image dimensions, tap a number to bring up the iOS keypad. This will enlarge or shrink your canvas to fit your chosen numerical dimensions. Instead, the numerical dimensions you enter set the canvas area. With Resample switched on, adjusting the size of the crop overlay doesn't change the dimension readouts. If you’d like to change the aspect ratio of your canvas when resizing, adjust the crop overlay before you switch on Resample.

It will preserve the aspect ratio (relative width and height) as you resize your canvas. When you toggle Resample on, the Aspect Lock is automatically engaged. Toggle the Resample switch on to begin resizing your content. To make your canvas larger, smaller, or a different shape, tap Actions > Canvas > Crop and Resize. Scale your entire image up or down with the power of Resample.

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