If you are a Windows Phone App developer then head on over to this web based tool and have a play: http://snac.nokia.com/2/pages/marketplacehome
If you are still reading here is the simple walkthrough:
Go to the WindowsPhoneMarketPlace and retrieve a link to the App you want to use
EG http://www.windowsphone.com/en-GB/apps/798a731f-c0f0-4c2a-b8b1-c1590a0d66ac
Paste this into the space provided:
(this will trigger the population of the other feeds).
Click on “Generate Banners” to create the full set of banners (see below)
