Once the door panel is off, this is what you will see. Pretty much all Mazda vehicles will have this thick composite plastic skin that will need to be removed to get to the outer door skin. Dont worry, its a bunch of 10mm bolts and a few 10mm nuts. You will need to remove the window regulator, which you can see sitting behind the door opening handle in the photo below. It is held in with three 10mm bolts. This is where you need to be careful. Behind that regulator is a mechanism that twists off the plastic panel. Once removed from the panel, the insides of that mechanism have only tension holding them in place. If you pull too hard or move it in a funny way, that yellow gear will pop out and you will be in for a rough time. take it from me. (This happened to me on a CX5 a few years back. took a second person and a few hours to get it back together). What you need to do as soon as you remove it, is wrap painters tape around it to prevent the yellow gear from popping out.