Today I changed one of free Blogger template's background - "Picture Window". Changed wallpaper an added flower photo to the screen. Below you can find links for download modified backgrounds, jpg file - with mask and path and tiff file - with layers.
When background will be opened in Photoshop you can see path for tv, channel for screen, or layers (for tiff file) so you can modify this again with your own wallpaper, screen photo, etc.
Also will be nice if somebody with html knowledge can put blog's content to screen place with control buttons on the TV side :)
Jpg file saved with maximum qulity, so after change use comand - Save For Web & Devices.
jpg + tiff