designer needed for iphone app mock up

i have a iphone app to create. i need some design mock up. take note : i need the design to be with a dark blue background the buttons and user interface must be web 2.0 theme style. big nice buttons. once design is confirmed i need the psd and high resolution png format to give my developer its a very simple app with only 3 "screens" the icons for the app is given. you need to design the logo, the user interface, splash screen please send me a sample of the design. i dont want to see what you have done before. i want to see your design mockup. the person that gives me a nice sample will get the project. i have very limited budget for this. best designer will win