What is the way to make eyeshadow stand out?

hello!

I am very interested in using eyeshadow.

How can I make my eyeshadow stand out more?

For example, what kind of effect can be achieved by using specific colors or techniques?

And what brush or blending technique should I use to produce a sharper and more precise effect?

What is the most important point when using eyeshadow?

I would appreciate it if you could help me in detail!