The easiest way to create a realistic looking dragon egg or any egg, is to add value. Value is lighter and darker areas to show where the light is coming from. It’s what makes an egg or an apple or a dragon have shape.
If you need more ideas on teaching value, check out some of these resources:
The Kitchen Table Classroom’s The Element of Value in Art an Intro and free printable
Donna Young’s Value Scale Printable Files
If your little dragon lovers create some awesome eggs from these printables, be sure to share a picture for our gallery!