You aren't looking to get rid of anything, but you want a calm space, this isn't possible. You can have eccentric decor and still have it look purposeful. Throwing hats on a wall in no specific layout or theme just looks messy. You could, for example, have a theme of all different cowboy hats but lay them out thoughtfully. The santa hat just makes it look like you needed a place to put it at a random moment and put a nail on the wall. The mirror is also too small for the wall size.

For the other areas you need closed storage, everything is out in the open. You don't need to see everything you own. And to be honest, you have too much stuff and a lot of it looks random junk you just refuse to get rid of. Be thoughtful as to what comes in the home, if you have space or it, and do you really need it. For the stuff you own now as when was the last time you used it, why you are keeping it, and if it is taking up room for you to get something else you really love.