Cardboard Costume Racer.

Step 4 Paint it grey

Using the primer and ensuring you have lots of space and ventilation set up the box and the flower pots and start spraying. Needless to say this is a job for the adult and you can be sure that the little helper will be wanting to peek in and watch.

Its going to take a couple of hours to make sure that the primer is dried so it might be a good idea to crack on with the other parts.