Its not a bad idea but I feel that there are too many spots of light shining and that makes the picture very busy which takes away from the potential focal point of the picture, which I assumed to be the flag. You might do better focusing more on the garage door itself and eliminating the empty space.
i think focusing on just the door and the greenish light above would have been perfect, although i do kinda like the extra depth the porch on the left side adds.
I like your idea of trying to capture maybe what i would call "everyday American patriotism" but the flag really gets buried with all the other light and the fact that its faded, maybe you should try a reshoot focusing on getting just the garage door and the flag?