Website UI Design - Flat Themed & Responsive

We are currently finishing up our NEW website (already in progress on another domain, will provide access to qualified bidders) but are looking for an experienced and VERY CREATIVE website designer to assist us with finishing out the design theme and various section layouts for our flat responsive look and feel for the new website. We mainly need the design and mockup of about 5 - 6 Pages to hand over to our developers. We are looking to hire someone that can dedicate 3 - 5 days EXCLUSIVELY to our design needs for, fast and quality service so please only bid if you meet the following requirements: MUST HAVE: 1. Must have and submit an extensive portfolio of Flat Themed Designs for us to look at and review (minimum of 5 examples). 2. Must be fully available to us via phone and email during the hours of 10 - 5PM EAST 3. Must Speak GOOD and easy to understand clear English (US, UK, AU, Canada, etc.. etc.) Ability to also code your layouts in HTML is a plus but not required as we have our own developers. Please provide your skype ID and Phone number to speak via phone so we can save time and get through the selction process quickly..