different types of fingernail. normal, short, roofed, tubular, arched, flat, convex and concave nails. nail extension guide.

anatomy arched beauty care concave concept convex correct cosmetology curvature curve curved design different disease extension finger fingernail flat form french growth guide healthy illustration instruction koilonychia manicure manicurist medicine nail natural phalanx plate protective roofed shape short side spoon structure texture tip training treatment tubular tutorial type vector view