first off...i applaud you for thinking outside the box...and then having the guts to put it here in front of some very seasoned veterans and ask for their help...
i liked the first interview, the background lighting over her head was a bit hot, but obviously you were using available lighting...so no biggie
the second one with the guy and the lamp...like others have said, it didn't work, but at least you tried...basically, the lamp was in the middle of the frame and blocking his talk space...and there was wayyyy too much stuff on the right half of the frame distracting me. The third one was kind of just alright, but the white wall in the foreground didn't have much to it, and I think she was looking the wrong direction.
one other thing I'd mention that is to always try to have a closing shot. If you have a great, emotional interview, you can get away with ending on the interview shot...but for the most part...close on b-roll. Try to get some kind of negative action (i.e. someone walking away from you, a door closing, etc.) Since the writing made the ending abrupt, a closing shot would've at least told viewers it was over visually.