Drag stencils from the right panel to the left canvas, then click a glob of paint.
Paint will go everywhere on the canvas except where you’ve placed stencils.
Colors mix as you’d expect them to.
To get rid of a stencil, drag it to the trash can.
To remove all stencils, click on the trash can.
White paint paints over any color.
Be creative! Sometimes you need to use a series of different stencils to paint one weird shape!