I like the structure but I miss other projects, there is only one. Regarding the project, I spent some time trying to understand how is the workflow, what led me to the Medium article and then I saw the demo GIF. Since PDFs don’t support animated media, maybe try a sequence of steps to guide the user. In this particular situation I had no issues to understand that, given it’s a simple microinteraction, but that can be tricky for more complex projects.
By the way, you are a software developer, man, so make yourself a Foursquare or WordPress page