Design an App Front Cover For Iphone & Android - Unlimited revisions

We need a front page design doing for our new Iphone/Android app. The app is for controlling LED Lighting through the phone/ipad etc. I have attached the current file. But we need this changing to look different. File sizes to be; A. 640 X 1136, minimum 72 dpi B. 640 X 960, minimum 72 dpi We would need Photoshop files. And JPEG, PNG files. This is needed urgently, as we are working on a strict deadline. So prefer completion to be today. All wording will be sent once accepted job, we do not have images. So designer must have access to there own high quality images. Thanks.