This tutorial Create Redwood-Stripe app from scratch is the latest addition to the RedwoodJS Community Library.
It is written by RedwoodJS application developer Stanislas Duprey @Standup75 using Stripe for Visual Studio Code with the specific intent to demonstrate the use Stripe API in a manner to minimize security risks.
Please report any problems following this tutorial here. Questions and comment - post in this article.
Can see a LOT of work has gone into this, thanks team! 
This sample details most of Stripe’s focus on security issues - insisting that “all processing, transmission, or storage of card data must comply with the Payment Card Industry Data Security Standards (PCI DSS)”. Such compliance is implemented by Stripe - Checkout and Elements host all form inputs containing card data within an iframe served from Stripe’s domain—not yours—so your customers’ card information never touches your server.
