One way to personalize shoes is to glue pictures on them with magazine images and decoupage sealer. Another way to personalize shoes is to draw on them with paint markers.
Both of these methods work best with a simple, white pair of shoes. Cut out fun images from magazines or comic books, and then use the decoupage sealer to stick them to the shoe in the desired area. Cover the images with at least three more layers of the sealer, letting them dry in between each application.
To personalize shoes with paint markers, start by creating a sketch of the desired design. Draw the outline of the design on the shoe, and then fill it in with color.