User interface for customizing graphical objects

In some embodiments, an electronic device displays a virtual keyboard, where the virtual keyboard includes a plurality of selectable representations of a plurality of graphical objects. In some embodiments, the electronic device receives a user input selecting a first selectable representation of a first graphical object, where the first graphical object is associated with a first customizable visual element and a second customizable visual element. In some embodiments, in response to receiving the user input and in accordance with a determination that one or more first criteria are satisfied, the electronic device displays a custom user interface via the display device, the custom user interface includes a first section for customizing the first customizable visual element, a second section for customizing the second customizable visual element, and a third section for displaying a first respective representation of the first graphical object, the first respective representation indicates a current custom st