I might have some thought about this. Here are some of the most expensive mistakes people make when they’re starting out in their design studio:
1. Typography; this is probably the most expensive mistake a designer makes. Choosing the right font for the right use is crucial. The best place to get started with choosing the combination is Google Fonts.
2. Spacing; whitespaces. This makes all the difference when it comes to user experience. Providing proper whitespace between elements changes the way people experience your product/platform.
4. Choosing the right image; choosing the right image and not going for a cheap solution is essential. We live in a world where Snapchat and other social media tools encourage people to use real-life content and not stock/edited pictures. Using a platform like Unsplash.com or pexels.com makes a huge difference.
5. line-height & letter-spacing; I have struggled with this a lot in my early career. Understanding the right spacing for each and every letter and between the paragraphs reflects directly about your thinking about design. Medium.com probably has the best