Answer:
Tip 1. Start with the unexpected
Tip 2. Start with an image
Tip 3. Start with action
Tip 4. Start with brevity
Tip 5. Start with a question
Tip 6. Start by appealing to curiosity
Tip 7. Start with an understanding of your fictional world
Tip 8. Start with something new
Tip 9. Start with intensity
Tip 10. Start with your heart
Tip 11. Start by placing a spell on your reader
But you need to think of an idea first. For examples, look at some of the famous romance novels.