Step 1: The Diagnostic Hook
Stop saying "I am a professional developer with 5 years experience." The client doesn't care about you; they care about their problem. Instead, start with a question about their project description.
Example: "I noticed your API documentation mentions Version 2.1, but your integration goal suggests you might need the Webhook support found in 3.0. Are you planning to upgrade before we start?"
This instantly signals that you have actually read the brief and, more importantly, that you are an expert consultant, not just a pair of hands. This is how you justify a $50/hour rate in a $10/hour market.
Continue to find out how to use 'Reverse Scarcity' to close the deal.