It’s possible to make a GIF in Photoshop with the following steps. Customizing your own GIFs may sound difficult, but it's achievable in Photoshop.
There are numerous apps you can use to make a collage on your iPhone by combining multiple photos. Here are two of the best.
Photoshop CS6 Extended tutorial showing how to make a powerful, dystopian image of massive, dramatically-lit, 3D text protruding from a stone wall.
Photoshop CS6 tutorial showing how to transform a photo of someone into a portrait made of fully, editable text.