It is necessary to create a composition that will visually look voluminous, but at the same time it is impossible to present it in reality due to contrasts of scale and interactions. Use 2 different techniques. Your task is not just to combine several images, but to collect one common meaning and idea, a single space. Each work must contain a text or an advertising slogan that you put into the concept of the composition.
1. Layout using the double exposure technique. Also put a title on it that creates an association with the image.