- Anytime you find a UI or mechanic you like while on the web, take a screenshot of it and save it
- Pick a palette from flatuicolors.com; congratulations, just use this forever (forever until you've gotten better at design to change)
- Make a logo with Photoshop, GIMP, or whatever graphics program you have using that above color palette
- If you have the time, sign up for Daily UI (dailyui.co) and and practice making mockups. Even if you're trying to learn front end web development, this will let your creative juices practice.
- Keep going! Everything you make on day one will suck, or look super cookie-cutter Bootstrap-y. So what, each time you make something, you'll hate a small piece of it and so when you make the next thing, you'll try to fiddle with that detail.
There are probably (much) better ways to get better at design, but this was the path I took and while I'm not going to be making a massive application for clients, what I have makes for pleasant looking visuals for my students and tools