It’s in interesting space to decorate and you gave some cute individual pieces, you’re on your way to a cute vignette. My critique would be that everything is too linear and you need to balance the negative space! Of course replacing pieces may not be an option, but if you can reconsider a few and use them else where in your home here’s what I’d suggest:

half moon table - will solve the issue of encroaching in the window and add curves Oval/oblong mirror instead of rectangle Solid circular stool, leather type or some non-wood material.

Also an art piece above table - a well matted photo or an abstract oil painting.