This is a clear, accurate, and non-sensational title. It sets an appropriate expectation by offering practical advice without making exaggerated claims.
If you want a few variations, you could use:
- How to Choose the Perfect Watermelon
- How to Pick a Sweet, Ripe Watermelon
- Simple Tips for Choosing the Best Watermelon
- How to Tell if a Watermelon Is Ripe
- 5 Tips for Picking a Great Watermelon
Among these, “How to Pick the Perfect Watermelon” and “How to Choose a Sweet, Ripe Watermelon” are the most natural and engaging while remaining accurate.
