design a surreal style collage ad poster like this<https://www.thinklangrand.com/imager/general/9852/publicworks_brand_f6ddb756651598a86debf2089590b6bd.jpg> that features a diverse multicultural group of 3 school-aged children (2 boys, 1 girl) dressed as a doctor, a scientist, and an astronaut smiling as the subject matter with the words valiants forging legacies as the headline. Use elements of Houston in the collage. The poster must be artsy and have a bright and happy contextual feeling to it.