Another great touch would be to have the iconic clown nose, but if you can find any of those squishy round ones that honk when you squeeze them, you can also make a fake cone nose out of cardboard, since those work as well. Clown costumes have the advantage of being easily customizable since there’s no color scheme that you need to stick to, since all you really need are the flashiest and most colorful clothes that you have in your wardrobe, and once you’ve gathered them all, abandon any fashion sense you may believe that you have, flash costumes and mix them up in the craziest way possible.