Almost every serious classical guitarists uses fingernails on their right hand to pluck the strings. This helps them to produce loud, clear, and brilliant sound.
However, to get this sound, you must carefully manage both the length and shape of your nails. After all, nails for classical guitarists are like reeds for wind players, or bows for string players. Slight changes can have drastic affects on tone quality, volume, technical facility, and much more.
This page gives you step-by-step instructions about how to grow and shape classical guitar nails, and shows you the various nail shapes that you can choose from.