My wife is six months pregnant, and since the whole reason I bought the D70 was to take shots of the baby, I figure I should learn how to take shots like these. I assume a black draped background, but what about the lighting? Any post-processing to the background to make it pitch black? That bottom one...her legs and torso have been completely blacked out...but everytime I try that it's quite obvious and looks really odd. How can I get shots even somewhat close to these?