If you want to overlay images, the order in which
you add them matters. Let's say you want a
character to crave something tasty, for example. You add choccy milk & a thought
bubble (turn it upside down); Oops! the choccy milk got covered up.
This time add the thought bubble first. Now when you add choccy milk it will cover the bubble. I BET HE'S THINKING ABOUT OTHER WOMEN.
