So proud to see people just jumping into design! It looks like you’ve got an amazing start on thinking primarily about the user and what they need to accomplish which is possibly the most important thing for any digital designer to focus on.
Two very powerful things you could learn to improve your visuals are typography conventions (mainly hierarchy and readability) and gestalt principles (which will help with spacing). There are resources on these in articles on Medium, other sites, and in books. Let me know if you’d like further clarification—though I think it’s also an important skill to go looking for resources yourself. :)
Great job and design on!