Android app development

I need an Android mobile application developed that has silimar funcionalty to PhotoGrid. The user will be able to select photos and apply filters to them, put them in frames, share on facebook and order the photos online from the app. This is not a clone of PhotoGrid, but it goes around the same idea and I don't want to disclose the full app. I already did minimal development of the application and I would like someone to take it from there and move forward with the full development, design and web services (facebook and paypal). Once selected, the whole project will be disclosed. Top app requirements: 1. Full design with professional looking icons and graphics. I need someone creative. 2. Web integration with facebook and paypal. The app will also have to send zipped emails with the product they are purchasing. 3. Follow OOP principles in the code. I will maybe maintain the code after the app development. 4. JNI for image processing filters. You can integrate any open source filters if it will cut down development time and costs as long as the desired effect is achieved. I can provide some insight on this.