Here’s where you’ll find a step by step process to sign up for redbubble, how to upload your designs and how to obtain your link for you Merch by Amazon application. We have found that Redbubble is the most time efficient way to put together a portfolio, in our experience we have used Redbubble as a site to host our portfolio. It is the quickest way we’ve found and the cheapest way to get your application finalised. All you need to do is create a Redbubble account, upload your designs and link the store. It is that easy.