Where can I find resources on Unity UI that shows you how to polish menus?

I am looking for resources that teaches/shows you how to make menus look more polished, then just a generic menu you would usually see using Unity UI.

A Before/After comparison, or contrasting showcases could work well, but the really awesome ones would be resources that teaches all about UX design in Unity UI. Or something of similar caliber.

I think you’ll be hard-pressed to find any generic polish tutorials, as it’s just so very dependant on what you’re going for. For example, you might choose to use seperate layers and apply camera effects to them, or you might add more complex animations, etc. Is there anything specific that you’re hoping to find?

I’m just looking for resources on how to polish your UIs.

Say that you have a few buttons and toggles in a panel. If you were tasked to change that panel UI, how would you go about it? What would you add? What would be removed? And why?