The photo is courtesy of Julian Abrahams who used the witch in a photo shoot. It is made up of a nose and chin foam latex prosthetic with custom nails.
Cheers You often find the simple option is the best option. They are just stick on nails from my local supermarket, I then used a Dremel and wire brush to skuff them up before painting and applying. Turn around was very quick so I needed to use all short cuts. :-D