The great sites above share the following design features:
Design the content, not the page
3D effects, used sparingly
Soft, neutral background colours
Strong colour, used sparingly
Cute icons, used sparingly
Plenty of whitespace
Nice big text
The design should have Main sections for types of screen savers. For example Celebrities, Cars, Sports etc, and it should have room for sub categories as well. Users will be able to download the screen savers directly from the site.
-Should have space for google ads.
-should have room for featured screen savers