And a 5 step plan for you to do it for your startup — This is the latest in a series of reflections on how to build, launch and grow a startup (particularly a consumer one, in financial services, in London) Before we get going, let me give you some context. I’m the Head of Marketing at Yonder, a new credit card launched in London last year. Yonder is a rewards credit card for the next generation of city adventurers — helping…