I don't have any pictures but it is fairly easy to describe, first flip the bird breast side down and take your poultry shears and cut as close to the backbone/spine as you can on each side and remove the backbone. If you are going to separate the two halves, I take a knife and slice down along the breastbone on each side, then I use the shears to cut the middle of the breast bone out. If you want to keep the halves together then you can break the breast bone out with a pop from the handle end of your knife and then pry it out trimming as necessary. Hope that helps or someone comes along with some pictures soon.
