Browse effect books
Flip through the effects books at the bottom that are divided up into categories such as Classics, Vintage, Textures, and Space.
More effects, please
To get the layered effect look, hit the layer button (second from right) to add another.
Don't overdo it
While two or three effects can produce great results, there is a point at which it gets a bit out of hand.
Slider for intensity
Touch your photo and use the slider on the right to change the opacity of the current effect.
When you're finished you can share your image with Twitter, Facebook, Tumblr, and Flickr, or via e-mail. In my testing, using the Open With option crashed the app every time.