6 is of course very cool. But hopefully my comment on 3 and 5 would help. I think in both cases, you should not have one of your subjects look directly into the camera. It looks very unnatural.
bw - I love the connection of someone connecting with the view but it is not for everyone. Yes #5 was primarily lit with a halogen overhead with a yellow cover. Thanks for commenting.
Ok, that was bad. I thinky you redeemed yourself. Good stuff and very creative on 6.
thanks