I do place models most of the time in the middle of the frame, but I try to change that lately.
Somehow I always let them look in the camera indeed, to be honest I do have alot of shots were that doesn't happen but I never find them good enough.
The lens used on location was a 15-30mm Sigma on wide open, so blurring was a bit difficult everything was rather close, that's also why sometimes the porportions are a bit wacked
Not alway's centered.
Not alway's looking at the camera.
Just kidding Klaus