I’m really please to see that GA is upping their game in teaching good prototyping and research skills. However, when you go out into the big world, make sure you take disabilities into account. Because app users may have disabilities, you want to make sure that your app is designed with the WCAG standards in mind. You can’t do user research with only paper prototypes with people with vision loss FWIW, you need to be more along into the functional prototype stage. There are some special considerations for doing UX with people with disabilities, I speak on this frequently and you can see one of my presentations at http://bit.ly/ux4pwds Good luck in your future work, you are well on your way !