Use the Pen and Shape tools
The Pen and Shape tools create graphics within a
To choose the Pen tool, Oval tool, Rectangle tool, or Line tool, click and hold the canvas tool in the toolbar. Continue holding until the menu pops up, then select the shape you want to add.
Images inside canvas elements can't be changed using timeline animation. The enclosing canvas tag can be animated (to move the entire tag), but the color or shape of the image in the canvas tag can't be animated.