I'm also not a Stripe customer, but back when I went to check out how it worked, the most impressive thing was being able to skip the sign up and jump directly into a usable product. Spend some time setting up your account. If you like what you see, and only then, provide your email and password to create the account (of course keeping everything you've set up).

It's such a simple thing to do on the backend, and yet I'd never seen this before. So simple to implement, but gives an amazing first impression.