Just one small feedback as a designer, if you want to see more conversions for sign-ups, convert that black sign-up button into green. Other than that, it's perfect!
Design impaired developer here; i'm interested to know how you picked green as being a trigger for more conversions, is there some data with A/B testing this color choice comes from?
Yes, I think there's a famous book on Psychology of colors, I don't remember its name, but it explains in great depth about colors affect purchases...
Cofounder here, thanks for your feedback, great suggestion.