Do not include elements from other superheroes or unrelated themes. The cake should solely focus on Blue Beetle and his Mexican heritage.
Avoid using flavors other than blueberry for the main taste, as it is essential to reflect Blue Beetle's signature blue color.
Do not add any text or decorations that contradict or overshadow the "18 de Agosto solo en Cines" message.
Avoid creating a design that's too complex or intricate that it becomes unrecognizable as a Blue Beetle-themed cake.
Do not disregard the cultural elements of Blue Beetle's Mexican background. These should be tastefully and respectfully incorporated into the cake's design.