I would not add anything! Cute the way it is :)

Sheer shade

I have a simple stained glass piece that was given to me by a friend. I suspended it in front of the top section of the window using cup hooks attached to the top sash's trim. It's not big (maybe 8" square) but it's a nice memory of a good friend, and the sunlight shines through the cobalt and yellow sections. It makes me happy when I see it.

I don't like to block sunlight so this works for me :)

https://beautifulviews.net/