Hello GreenEggs
If you search Victor Maletic on the forum and scroll down to 'Installing WYZE Cam outside- one approach ', you will see how the support bracket is made from a 12"x12"x2" sheet metal angle. The angle is cut down with a hacksaw and bent in a vise with a hammer. Dimensions and bend angles to fit your situation.
The power cord is not protected particularly well. Could be duct-taped along the edge of the support bracket.