How do you change Kubrick background to an image?

Hi-llo,

I want to change the current Kubrick background to an all over image background like my website (www.quarterbloom.com). I’m able to go into the theme editor and find the body code but not sure how to make this happend, need help! Also how may I place an image in the header section as well or cant I? Thanks for all your help guys! Keep it movin’ peace!