I’m also very interested in this type of work and experimenting too. Watching Nuke camera projection tutorials, using places like www.fxguide.com for source of information, where there are some great podcasts as well btw.
I think your camera move is to fast, unreal and severe and the motionless figure takes away the reality further. But it’s interesting to see progress / tests.
EDIT No it’s a problem with Google Chrome web browser play back speed, when I replay the them they are much slower and yes as Squiggly_P said very nicely done.
Instead of the jitter script you could capture a hand held camera move videoing anything and then use something like PFHoe to capture the camera move data and apply it to your blender camera for this image to give a more realistic camera move.
If you’re looking for more tutorials, I’ve found loads, searching ‘camera projection’ , matte painting and Nuke, Combustion and After Effects.
I’m having the same problem with camera matching. I’m using blenses script to try and get the right hFOV for my DSLR shots from the exif data. I think it helps to use a standard length lens like 50mm and not a zoom which could be any focal length or set the zoom to a few standard lengths.