Holiday Planning & Ideas Easter Easter Crafts Easter Eggs Royal Copenhagen Easter Eggs To get the look of Royal Copenhagen, we used temporary tattoos and nail decals, which affix to eggshell as easily as they do to us, to achieve perfect cobalt flourishes. By Martha Stewart Editors Martha Stewart Editors Facebook Instagram Twitter Website An article attributed to "Martha Stewart Editors" indicates when several writers and editors have contributed to an article over the years. These collaborations allow us to provide you with the most accurate, up-to-date, and comprehensive information available.The Martha Stewart team aims to teach and inspire readers daily with tested-until-perfected recipes, creative DIY projects, and elevated home and entertaining ideas. They are experts in their fields who research, create, and test the best ways to help readers design the life they want. The joy is in the doing. Editorial Guidelines Updated on March 19, 2019 Share Tweet Pin Email Photo: LENNART WEIBULL What You'll Need Materials Eggs Powdered dye (Pictured: BestPysanky Traditional Powdered Dye, in Blue, $1.50, bestpysanky.com.) Distilled white vinegar Decals (Pictured: Tattoorary Delft Blue Temporary Tattoos, from $3 each, tattoorary.com. Nail Decals, $4 for 12, tattoorary.com.) Scissors Paper towels Instructions For blue eggs, wipe room-temperature hard-cooked or blown-out white eggs with distilled white vinegar; dry thoroughly. Dye following egg-dye manufacturer's instructions. For patterned eggs, remove protective film from a temporary tattoo or nail decal. Cut around shape, if needed, leaving a 1/8-inch margin. Hold tattoo or decal by edges, without touching inked side. Place on the center of a hard-cooked or blown-out white egg. Holding egg in one hand, secure tattoo or decal with your thumb. With other hand, dab a wet paper towel over tattoo or decal, gently pressing down. When you feel it has adhered to egg, carefully remove paper. If any parts aren't completely attached, dab them carefully with moist paper towel. Let dry completely.