The layer called ‘getting to know’ bounces into view using transforms. The tweens applied to each frame, to achieve this effect, can be seen above.

Layer ordering has to be considered when having items appear inside/behind and transitioning to outside/in front. Because of the stacked nature of layers, sometimes visual tricks need to be employed. In this example (above) the pink arrow and ‘Getting to Know’ text would be visible inside the cog brain before it is lowered into view.

Hiding a layer until it needs to be visible, with the opacity slider, is often much simpler than trying to obscure untimely elements.