Gleb Kuznetsov is a Russian designer that comes up with pretty gorgeous UI pieces for apps and web. He's got a pretty awesome portfolio with many great examples of how beautiful an interface can be. Check it out! Here you can see a brief selection of his work.
Shoeciety is an app design concept project created and shared by Juan C. Fresno. As you might already know, I am a fan of personal projects. The fact that you take some time from your busy schedule is always something to be celebrated. If someone asked me for an advice, which I am sure no one would be that naive to do so, I would say, try to find time for personal projects. You can practice everything you want and in the end, I guarantee you that you will be better off than when you started. Look at this project that Juan shared. There are just too many things to love about it. From the branding and naming all the way to the presentation. Honestly, this is the type of projects that get me inspired.
"Shoeciety" is an app concept designed for shoe lovers. Simple and minimalist design to get a product-centered experience.
I know you might say, but there are no constraints, or the fonts are too small, or it doesn't scale. I feel that the point of these types of project, like Shoeciety, is just to exercise and develop your technical skills. For that, you don't need a full-time job or a client, just time.
App design concept