These parts were designed to fit my Dell 7760 All-In-One but you can modify the editable TinkerCAD design to make it fit snugly on your computer.

Lay these parts out with the 4"x6" plexiglass and mirror you bought.  The mirror I bought had rounded sides, it doesn't matter if yours does or doesn't. Also I purchased PETG plexiglass but any clear material should work.

You can use free teleprompter software (Google it) to scroll your text in front of your webcam for reading while you record a video.

Or use it during video conferencing to look directly into the camera and maintain eye contact with the person on the other end of the call!