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With the wall anchors in place, take the screws provided with your sconce and begin to drive them into the wall anchors. Do not screw them in all the way; leave a small gap between the screw head and the wall. This gap will allow you to insert the mounting bracket. Once the screws are set, take the mounting bracket, align its keyholes with the partially inserted screws, and slide it down so the screws are seated in the narrow part of the keyholes. Now, use a screwdriver to firmly tighten both screws. It's crucial for the bracket to be as tight and secure as possible to safely hold the sconce.