Exactly. Think of your fingers, your nails, your fingertips as a tool for expressing your inner beauty, sensitivity, passion. Your tone comes from your inner being, and a lot of hard work and CAREFUL LISTENING is required to evoke the sound you want. Of course, your nails need to be well filed and polished, but don't let yourself get too obsessed with nails and forget about your mind and soul. Very slow tempos and listening to every tone you produce will lead to building up a better tone and also a better technique. Experiment with nails, find out what's best for you and, most importantly, listen to yourself.