Xulane Patch Placement Site

Is this a correct placement for the Xulane Patch ? This is my first time taking any birth control ever and I'd just like to make sure that the placement is correct. I aimed for my butt cheek like in the picture but kinda ended up off to the side of my butt cheek. Is that fine ? And does it need to be exactly like pictured on the pamphlet or can you just put it anywhere on your butt cheeks lol ?

Also, I'm a bit confused w/ the directions. I started my period yesterday and put this Patch on just now today (Sunday) so when should I change it each week ?