Few quick things.
I saw you hiding your thumbs frequently (shows insecurity):
http://bodylanguageproject.com/the-only ... -indicate/
Also clasped hands (like mom or dad holding hands as kids):
http://bodylanguageproject.com/the-only ... -gripping/
I don't recommend leaning against objects as it shows that you aren't confident enough to stand by yourself i.e. need support, a crutch object.
I'm not adverse to taking criticism but hiding thumb as being insecure?
Clasp hands being an issue?
Leaning in this sort of manner being a crutch?
I think you're focuse on too much details which the average human eye nor subconscious mind can pick up on. But a woman will notice when a guy is blatantly insecure. However hiding thumb being insecure? Who spots this? And if it is the case actually, I doubt it'll killa any guy's chances.
As for leaning, you really have no clue how seduction works. You're not leaning in order to look cool. You're leaving because it sets a sexual frame in the same context of exuding confidence plus making the girl more at ease.