Why is it so embarrassing to buy makeup??? Like HUH??

What are they gonna say? "gross this afab 16 year old is buying makeup ewww they're doing something completely normal for their demographic >:[["

Need to get over embarrassment aside, do any of yall have any tips for someone who's just starting off using makeup? :3

I'd prefer it if it was for more colorful makeup but "natural" makeup tips are fine too 👍