Illustrative Movie Poster Creation

I am looking for an illustrator/graphic designer who can create a product ad in the style of a movie poster (think Star Wars or Indiana Jones). We are promoting a unique education product/course (see https://www.glitchlearning.com) that infuses story and game elements with STEM education. As such, we want to promote this course using a poster that emphasizes the dramatic story elements of the program. We already have copy and a basic design idea to begin with. We are looking for an artist who can bring the image to life.