Wow, beautiful. Maybe give the photo a bit of a twist or a corner curling to make it feel more naturally like it's blowing in the wind? I think if it doesn't line up with the house perfectly it might be ok, and perhaps even more believable. I know you've done a lot of iterations of this work based on suggestions, so there has to be some point when you feel finished with it, even though other brains have more ideas. If you're still going though, there's my idea to throw into the pot.