Nail tech selects appropriate shape, length and the material, and the design is secondary. So l'd say, learning how to do extensions is a handy little thick up the sleeve for a good nail tech to have! Among our online courses we have not one but two on extensions: Nail modeling without filing (using forms) and Nail extensions without forms, both in English and en Español! https://taplink.cc/nail_mozhzheri.ufa 👉web: https://russian-manicure.com 📭e-mail: russianmanicure@gmail.com, 📲What's App: +79876278666, 💻Facebook: https://www.facebook.com/nail.mozhzheri/