App Re-design - repost

I have an IPhone app that has been pretty popular in the past year and I would like to re-design the UI in our next update that will be fitted with great new features. It's only about 3 screens deep and about 10 buttons, I would like it to match the iOS 7 art work that I have attained. So there is no designing really needed, I just need the iOS 7 artwork to be used to redesign my app. I would like a wirefram and all the artwork in PNG 24 ready to be passed to my developer. by downloading my app form the app store and using the Psd I will provide, this should be pretty stright forward job.