I had to take off the oven door, Then I unscrewed the top handle of the door. I screwed on the new bottom trim (which holds the front glass). Then I gently laid the new piece of glass I ordered into the tight ledge of the bottom trim and lined it up with the sides of the door. In order to screw on the top handle, the trim on either side of the oven door needs to fit underneath the handle on both sides. Also the front glass has to fit underneath the handle before you screw on the handle. It's not a hard process just takes a lot of patience so that you don't break or chip the glass. Then I needed to put the oven door back on the hinges. There is a trick to it, at least I found that it's not as easy as it looks. I got the door back on and was happy I could do it myself without having to pay a handyman.