If you click on the My Profile link at the top right a drop-down menu will appear under the navagation bar. There will be a link that says Customize Profile.

Inside, you can change the background color, add a background image or change the font and font color.

Don't forget to upload your pictures and videos to your profile too.

Spend some time clicking around on the various links to see the capabilities of the new website. I hope you have lots of fun with it!