I didn't have enough of the blue for the entire backing, so I put an 18" green piece off-center. It looks like I planned it that way...not that I didn't have enough fabric!
The next day I made 2 pillowcases, burritio method (only way I'll make them). As soon as DD/SIL puts up his double bed, I'll deliver this to him. He's currently (finally) sleeping in his toddler bed...so the crib is going back to the nursery for Baby #2's arrival next month.
All fabrics were purchased from fabric.com. THIS is the pattern I used.