Red Car Shaped Card

I printed and cut out the cars. I attached one of them to a tent folded card so that the car protruded past the top to around level with the bonnet/boot.

I then cut the card to the same shape as the car.

I printed Happy Birthday to a piece of white card, cut out and edged in black to make a number plate.

A peeloff on a piece of white card would be just as good. I did the card mounted this way for strength and so that I could put an insert inside.