Option (Mac OS), and drag the group to an open area above the drink. Pressing Alt (Windows) or Option (Mac OS) copies the selected object as you drag it. 4. Repeat step 3 to make another copy of the star. Adding Shapes In addition to the stars, the fizzy area above the drink will contain small ovals. You'll use the Oval tool to create those. 1. Select the Oval tool. 2. Hold down the Shift key, and draw a circle. 3. With the Selection tool, select the circle. 4. Press Alt (Windows) or Option (Mac OS), and drag the circle to create another copy. Animating Objects You'll create a very simple animation for the fizzing elements to create a popping effect. The objects will move on the screen every five frames. You must create a keyframe at each frame where the objects move. 1. In the Timeline, select frame 5 in the Fizz layer, which contains the fizz objects. 2. Choose Insert > Timeline > Keyframe. [View full size image] 3. Add a keyframe for every fifth frame through frame 30. (That is, create keyframes at frames 10, 15, 20, 25, and 30.) [View full size image] 4. In the Timeline, select the keyframe at frame 5. 5. Rearrange the fizz elements on the Stage. 6. Select each of the remaining keyframes, in turn, and rearrange the fizz elements so that they're in a different position for each keyframe. 7. Choose Control > Test Movie to preview the popping fizz you've created, and then close the preview window. Masking Objects A mask provides a hole through which underlying layers show, so that you can limit the area of the layers that is visible. You'll use a mask to keep the bubbles in the glass. 1. Unlock the Glass layer. 2. Click on the drink fill on the Stage to select it. 3. Choose Edit > Copy. 4. Choose Edit > Deselect All to prevent the fill from sitting above the outline.