Update my PhoneGap/Cordova App with new Art

I have an Android App currently on the PlayStore. What I need to be done currently is. I want some better screenshots for my listing and also a much nicer icon for the listing. I also need an nicer icon for my actual Application which is built using Cordova/Phonegap. I would also need you to sign and zip align the new version for me so it is ready to upload to Playstore. I need around 5 screenshots with also a Hi-res icon and a feature graphic