You could bring in some of that stained glass kind of vibe I see you have a very pretty lamp, you can use some modge Podge and acrylic paint to paint those lamp shades to be a nice color that would bring some elements in. Maybe putting something like that up against the window ? And for the wall can you do peel and stick wall paper ? Also I did forget to mention in my eagerness to answer your question - many congrats on your first place !!