Creative expression plays an essential role in the development of cognitive skills. Creativity Support Tools (CSTs) such as child-AI visual storytelling where children can verbally narrate and figuratively draw and express their stories are increasingly used to scaffold and support children’s creative expression, helping them overcome creativity decline or blocks such as the fourth-grade slump, a phenomenon where children’s creativity declines by grade 4. However, child-AI visual storytelling interfaces are not always designed to align with children's mental models and expectations, nor do they fully accommodate their developing cognitive and motor skills. For example, generative AI interfaces such as DALL-E have been used as examples of Creativity Support Tools for visual art and storytelling for children, however, they are not always designed to accommodate children’s needs and the diversity of their interactions in mind.