I know this is a rather obvious thing to say, but I think you should crop right down into the good part. making it off center is better than centering it, but removing the wall altogether on some or all sides might work better.
Painted walls on their own burst with potential, especially for windows and doors. Wonderful window, as one or of six constituent paintings. The luscious colors draw one in. The fairy tale notion of going through the window and into another world is compelling here.
WOW! The wall and window frame would be enough goodliness for me but the window adds another dimension. Yes, I can see the chandelier and another window? but the rest of the window could be either a reflection or some magic painting. Lovely colours and composition.
Ohhh, now this one I adore. The subtle interest of the wall - textures, cracks, tonal variations - and the window frame itself set off a reflective collection that I can explore for a very long time. I love it when it's not clear what's inside and what's outside; or maybe this is all outside but if that's the case, what's a chandelier doing hanging out there? For me each pane is a painting and the whole is yet another. I'm not crazy about the upper left one . . . it would be the last I would buy if I were collecting these one by one . . . but I'd be torn on the order of the others. For sure I think I'd get the three on the right first as they are each wonderful and the vertical triptych is very satisfying.