Nail guru and brand founder, Leighton Denny MBE, says nail art can be rocked at any age. The idea that nail art is only for the young is outdated," he tells HELLO!. Nail art, when done well, is a modern accessory that enhances rather than overwhelms. Overly pointed or harsh shapes can make hands look severe, while softer shapes are universally flattering," the nail expert explains. Which simple nail art designs elongate and flatter mature fingers?