To me the curling tendrils of the creeper (what is it by the way?), and the shadow of the vine are the focal points. I would tend to try for more of the tendrils (perhaps higher up) at the expense of the bird house (sorry father-in-law!)
The birdhouse is actually in an oak tree...a rather large oak tree...in fact a huge oak tree. The "tendrils" are actually one of the lower branches that seem to twist their way everywhere! That branch is big enough to be a tree unto itself!
It was too late in the year for there to still be any birds in it...but I liked the nice patina it was getting (it's made of copper) as well as the composition. Perhaps I'll take a look at it again next spring, to see if it has any new residents!