Mobile App Background Images

I need design elements for an application which shall run on the following mobile platforms: Blackberry OS, IOS and Android. The specifics are below: 1. Background images (4) used on all screens of the application depicting the four seasons of the year (winter, summer, spring and autumn). The background image should be as unobtrusive as possible (perhaps with distinguishing features located in the top right hand corner?). The background images should be designed as per manufacturer specifications to cater for different screen resolutions on the three different platforms. The specifications are available on request. 2. An illustration of a wardrobe (background image) with shelves. The cross-platform specifications outlined above should comply. 3. An illustration of a wardrobe with closed doors. The cross-platform specifications outlined above should comply. 4. An illustration of a wardrobe with half open doors. The cross-platform specifications outlined above should comply.