Snip off about 1 inch from each cut edge.
Fold the front up, using a wood block as a quide for a crisp edge.
Fold in the back side with a pair of pliers.
Fold in the front side as well. Then repeat on the other end too.
Fold over the edges towards the inside to cover the sides.
The finished license plate box will be about 5 1/2 inches by 3 inches, and about 1 1/2 inches deep……depending on the size of your plate. Fill them with anything you want. Yes, even succulents.