It's the first one. The design is good, but that's just the visual part, so if you wanted to handle the entire product side, you'd also need: - an introduction to the problem you are trying to solve, info about the existing landscape (competitors, problems users are facing, etc.), and information about the research you've done to back this up. It's important to be able to justify your ideas and decisions. - the structure & interaction of the product. You are only showing the core parts of it, but, as the title implies, UX is about considering the entire experience a user will have with your product so it would be good for you to document all the paths users can take and show more designs for the sections that are important. For example, looking at searching, how will it work? Will it search all my feeds? Can I search just one specific feed from the main search bar? Will it search my favourites? How will results be sorted? How will results be displayed (do you show images, do you show an icon for the source, do you show text?), will the user get to customise any of this in settings? (a lot of third party apps for Reddit or Twitter appeal to power users with a ton of customisability). All of these things will be for you to figure out if you move to product. And the good part is that once you figure out what solution will work best for the users a product is designed for, you can use your visual skills to make it shine. - that will probably not apply here but you would be expected to validate all your ideas, to confirm their usability (i.e. is the way I've done searching easy for our users to use), and their validity (does this actually solve the problem we wanted it to solve). Quintin's site is a good intro to user research and I can also recommend this LinkedIn course that gives you a bit of info about each of the methods you'll have at your disposal (it is still up to you to decide which ones make the most sense for a particular project). - lastly, if this was a real business, you would also be expected to understand the company's goals and justify how your decisions can help them get there. To get better at this, I'd recommend Mike Monteiro. He has two short books that I found very helpful when I first read them and several talks on Vimeo, of which I'd recommend this one and this one.