Branding and designing (must be iOS expert)

We are looking for someone to brand and design an App we are developing for IPhone. What we need is basically to finalize a brand we have already started to create, design: 1. Overall look and feel 2. Colors 3. Animated splash screen 4. Icons (App icons as required by AppStore, and 4 "Tab" icons for "New File", "My Files", "Scan" and "Settings" 5. Buttons (scan, finalize, enhance image, rotate left, rotate right, save, send, attach, pdf, jpg, etc.) 6. Other UI elements.