App design and Advertisement

So we have an idea for an app and would like to pitch it. We are currently looking for a freelancer or multiple freelancers to produce in conjunction with ourselves the following: 1. A beautiful mock design of the app (only visuals) 2. An iPhone and android app store icon 3. A mock video of the app and the capabilities (we will provide the music, voice over and editing). Similar to [login to view URL] but only 3.30 minutes long. We need you to provide a professional video presentation of how the app would work. Again we are looking for freelancers that are either experts at one or all of these criteria. We are a professional design agency so high quality design is imperative. We own the idea and concepts so any freelancers must sign a non-disclosure agreement and a non-compete/trade secrets contract. Only freelancers with demonstrated prior experience must apply. IF YOU DO NOT PROVIDE SAMPLES OF PREVIOUS WORK IN YOUR BID YOU WILL NOT BE CONSIDERED AT ALL.