How to set a custom background for Google?

Are you bored with same old Google home page ? Do you want to add background image to Google home page that looks like Bing?Google just made there home page just like its tough competitor Bing.You just want to know how to make this Google tweak, right?
Go to the Google home page and you can see on the bottom left corner where it says "Change background image" Click on it...

You can find different images, including those you can grab from your own computer, those from your Picasa album or even from a large set of photos that are already available.

Here I have just uploaded a Wallpaper and set it as Google Home page background images.