To become a successful fundraiser on donation-based crowdfunding, start by clearly defining your cause and explaining its impact. Share a compelling, emotional story that resonates with potential donors, showing why their contribution matters. Set a realistic fundraising goal and offer transparent updates on how funds are used. Build trust by providing proof of legitimacy, like testimonials or supporting documents. Use social media to spread the word, and engage with your audience regularly. Personalize your messages to donors, express gratitude, and foster a sense of community. Consistency, authenticity, and a well-planned marketing strategy are key to success.