Starting with a simple white ball, get to work by clicking on the masks you want to use and attempting to cover up the right ball. The goal ball or face, for example, may be orange with white eyes and black pupils, which means you need to use different spectacles to block the paint and make the various patterns. Want to get a beak? You might need to pull with a pair of pliers a few times. There is no time limit or penalty for making wrong decisions, so you can try several different setups to achieve your target.