When you first open Paint, you are in Canvas mode. In Canvas mode, you can use brushes to modify your images. Brushes apply colour, filters, and Special Effects media to the image on the canvas. The brush cursor appears as a green cross surrounded by a circle when placed over the canvas. Canvas mode features are not available from multiple menus, such Canvas, Geometry, Fill, and Roll.

You can also paint on the canvas using geometric shapes to define the path of the brush.

To ease the painting of canvas edges, you can roll the canvas in the image window.

To paint on the canvas:

1. Click Paint.

   The Paint menu appears.

2. Click Canvas.

   If the scratch pad is covering this button, swipe down to hide the scratch pad.

3. From the Paint Mode controls, click Paint.
4. Set a colour in the Current Colour pot. See Selecting Colours.
5. Select a brush from the Brushes window. See Selecting a Brush.
6. Set the brush attributes and modes in the Brush Attributes fields. See Brush Attributes and Brush Attribute Modes.
7. Set the brush opacity in the Opacity field. Set the opacity to 100% to apply a fully opaque colour.
8. Stroke the brush over the canvas. To paint straight horizontal and vertical lines, press Shift and drag the brush up and down or left and right.
9. Click Undo (or press Ctrl+Z) to erase the strokes applied to the canvas since the last time you zoomed, panned, or changed a brush attribute.