Poor Alignment Results, is it my images?

I’ve been testing RC for educational purposes but have been getting mixed results with my alignments and I’m thinking it’s probably the images themselves, I have a series 150 images which I will attach that I’m not sure where I am going wrong, am I not framing enough of the image with the subject itself? Would anyone be able to steer me in the right direction with this one? 

EDIT: I have since tried with another series of photos with subject taking up much more of the frame and I am still getting similar results. I will add a photo in from that series as well

Your object is a bit featureless, but it could work :

-add highly textured object around your object (newspapers, magazines, markers…)

-try to shoot with a closest aperture to have a higher Depth of field.

Ahhh, I was going the complete opposite way and trying to use a textureless base. Will give that a shot.