Wireless Backup Camera Screen Bracket

I was only able to find one bracket to mount the screen of my backup camera to the mirror of my truck but it didn't fit well, so I designed my own. This bracket it printed in 3 parts and then held together with 4 m4 screws. The screws for the front plate of the bracket are inserted through the front of the base through the large holes. This design also utilizes the metal bracket that came with the screen. mounted the metal bracket with 3 m4 screws with nuts on the back side, but only 1 screw