Congratulations on finding your first winner. The biggest milestone isn't the profit itself—it's developing a repeatable process for identifying products, testing them, analyzing the results, and confidently scaling the ones that prove themselves. That's the foundation of a long-term eCommerce business.
The fact that you simplified the creative instead of making it more complicated is a valuable lesson. Good products often sell themselves when demonstrated clearly.
I think the biggest competitive advantage in dropshipping today isn't finding suppliers—it's consistently finding products that are both useful and attention-grabbing.