I launched Elthos RPG on Stripe with a subscription system for the Mythos Machine, and used Stripe Connect to create a Worlds Marketplace. I got 106 new signups in the first year.
Here are three good lessons to keep in mind, I agree:
Refine your website before launching. Make sure it's done as well as you can get it. Then launch.
Stay consistent. Keep posting about your project, and don't give up, even when it seems like no one is paying attention.
Don't pay attention to the haters. There will always be some negative commenters. Ignore them, try not to take it personally, and focus on the positive.
I'm excited for what comes next!