Wuhuuuu...my first 'official' layout designed by moi.hehhe.it's a little bit stretched.haha. you can apply  it by copying and pasting the below code in the javascript/html gadget. 

Go to layout>add gadget>[+]html/javascript>paste the below code>save

Make sure your template is set to minima black.

Credits to TCBOTB for the code. 

<br /><script>document.write(unescape("%3Cstyle%20type%3D%22text/css%22%3E%0Abody%20%7B background-image %3A%20url%28%22http%3A//i3.photobucket.com/albums/y79/lymeq/green_flower3.jpg %22%29%3B%20background-position%3A%20center%3B%20background-repeat%3A%20no-repeat%3B%20 background-attachment %3A%20fixed%3B%20%7D%0A%3C/style%3E%0A%3Cdiv%20id%3D%22tag%22%20 style%3D%22position%3Aabsolute %3B%20left%3A0px%3B%20top%3A30px%3B%20z-index%3A50%3B%20 width%3A150px%3B%20height%3A45px%3B%22%3E%0A%3Ca%20href%3D%22 %22%20border%3D%220%22/ %3E%0A%3C/a%3E%3C/div%3E%20"));</script><br />

Feel free to comment =]