First you need to blow your egg, that way you can keep your creation forever without it going off. Use a metal skewer to make a small hole at the top of the egg and slighter large hole at the bottom. Use the skewer to break the yolk, then blow the contents out into a bowl. Rinse the egg throughly then leave it to dry.
2. paint the eggs with a base coat of regular house paint first (not gloss). A good tip is to make a little donut of blutack to rest your egg on, so it doesn’t roll around. Use a wide flat brush to apply one or two even layers of base coat.
3. When the base coat is dry lightly sketch on a design in pencil, then use acrylic paint and ink to finish it off.
4. Simple designs and repeat patterns work best. Alternatively you could just draw on the painted egg with a sharpie. That's it!