You can use your tow hook to mount a license plate if your car has no front bracket. Depending on your car model, this can be as easy as using your finger - or require a tool and some force.
First remove the hook cover.
Then attach your license plate mount stick to the hook.
After it’s inserted and attached firmly, you can attach your license plate frame (or license plate).
Tilt if necessary to make the whole setup parallel to your bumper.