Concept Art for Feature Script/Screenplay

I have a feature screenplay that I need four panels of concept art done for. It is a script that has garnered consideration and could a further push with visuals to demonstrate the look and feel of the project. I will credit you on the art pieces, and if this leads to a graphic novel adaptation, I will be willing to work with the illustrator for further pay, credit, etc. as the issues progress. Must be comfortable signing a non-disclosure agreement before I can allow you to read the script or any additional samples of it. Requirements: A comic book fan is a plus. This screenplay was inspired by the following graphic novels: Hellblazer, Blade, Constantine, Hellsing, etc. I will favor anyone with experience in concept art, especially those who are able to cater to the vision of the writer while having the ability to bring their signature style to the work.