Step 1: Wear a Crown Every Day
Step 2: Use the Royal We
Step 3: Demand Free Food and Drink at All Times
Step 4: Make Your Subjects Bow Down to Your Awesomeness
Step 5: Use a Throne for Everything (including your couch, toilet, and bed)
Step 6: Practice Your Royal Wave (it's harder than it looks)
For more advanced royal training:
Disclaimer: Being a real royal is hard, you might get a headache. Don't say we didn't warn you.