Create an eye-catching birthday nail design that exudes festive flair and joy. Integrate playful pastel confetti patterns and shimmering gold accents to celebrate. Consider incorporating tiny hand-painted birthday-themed motifs such as cupcakes or balloons. Use a blend of glossy nude and vibrant magenta as base colors for an elegant yet fun look. Finish with a holographic topcoat to ensure the nails sparkle under flashing party lights.