1. First you need a suitable picture, a 1172 x 720 JPEG is best to avoid distortion. If you can view it on the 360 then you can make it your background
2. Go to the Media Blade and select pictures. Go into the device where your picture is located and find the picture you want.
3. Highlight the picture you want and press the X button to apply it as the background, Yes that you want to apply it as the background and there you have it!
4. Now for the guide background, you know that little interface that slides open when you hit the guide button, lol. Hit the guide button on your controller, select personal settings and the themes
5. The name of your picture will now be listed under themes. Now select Customize then Guide Background..
*Tip: selecting the picture again in the future will reset the guide background and settings that are about to be changed back to thier default settings.
6. From here you can select any texture from any theme in your collection, include those you downloaded as part of purchased pakcs. If you are not into textures then you can create your own custom colors
7. Press the B button to back out to the customization menu. Select Dashboard Trim. There are only 3 selections to choose from here...
8. If you have the live Vision Camera, you will have an additional option in the Customization Menu: "Camera Effect". You will have 3 options here, each overlays a live feed from your camera onto you blade background
9. There you have it, customization complete!!