Help us bring to life an innovative web application!

We are looking to design 7-10 screenshots that would demonstrate a user experience for a web application. Some screenshots will be walking through the sign up process, and some will be examples of what a user would see / experience once they are in the application. We are looking for someone who not only has the skills to build visualizations of the screenshots, but is someone who cares about the little details that make the vision pop. We have sketched out drawings using Wacoms that we can walk through with the designer, but are very open to the incorporating the designer's experience and creativity.