If you are going to make a cast of an object, such as your own nose, you do not need to use messy terra-cotta clay and cling film in order to successfully make a casting. By using polymer clay, you can make a realistic casting of your nose without water or cling film. You can even bake the clay right in a conventional oven, making the process even more simple and achievable.
Knead a 4-inch ball of polymer clay for a few minutes to remove any air bubbles.
Flatten the clay into a 2-inch thick sheet using your fingers.
Drape the clay sheet over your nose, press your fingers over the clay to ensure that the mould of your nose will be accurate.
Pull the mould off of your nose, making sure not to stretch it.
Place the nose mould onto a baking tray and bake it in a 200 degree Fahrenheit oven for 15 minutes.
Insert more polymer clay into the hardened mould, then pull out the nose casting.
Bake the nose cast on a baking tray, as before.