Adding the finishing touches
The layers work pretty well with the underlying video, but they’ll blend more convincingly if you change the blending modes. You’ll also add the audio file.
Click the Toggle Switches/Modes button at the bottom of the Timeline panel.
Choose Multiply from the Mode menu for all the layers except the Checkerboard layer; choose Overlay for the Checkerboard layer. (You won’t be able to change the mode for the Spiral layer, because Collapse Transformations is selected.)
Drag the Melody.aif clip from the Project panel to the bottom of the layer stack in the Timeline panel.
Press the spacebar to preview your creation! When you’re done previewing the project, save your work.