Hi there, before I state why I may be a good fit for this project, I am slightly un-sure as to what it is that you require. Are you looking for someone to create you a logo and poster for your mobile site or are you looking for this and also for someone to build you a mobile website ?
I myself am a freelance web developer with over 5 years experience in creating engaging, usable and responsive websites for a variety of different clients that have ranged from startup business to large e-gaming organisations.
I class myself as a front -end developer and I mainly concentrate my skills with HTML, CSS3, PHP, jQuery etc in building responsive and scalable websites that provide a excellent experience for the end user no matter what device they are using.
With some more information about this project and some disscusion I believe that I could be of great help in providing a great looking and engaging mobile website for your needs.
I would love to hear from you about this excellent opportunity and exciting project.