I have made a decor for the studio entrance. I used colored paper and scissors to cut little mushrooms, gems, flowers and birds and then stuck them to the window with tape. I think it makes for a warm and whimsical welcome.
Since I am not a photographer; I found it was hard to capture with the camera because of the reflection. See the garbage bins in the back? Hmmmm - wonder how you would avoid the reflection IF you were a professional photographer...?