Lobster makes some good points. I'm not a bodybuilder, I'm more into the powerlifting routines. But regardless of whether you're bodybuilding or powerlifting you need to start with a whole body baseline and figure out your bodyfat percentage. Most gym trainers will give a complimentary fitness evaluation, which includes bodyfat. Your diet will have as much (if not more) impact on your "lines" as your lifts. Specifically, high quality protein, calcium, and total caloric intake. You also need to set realistic goals. Unless you're an NFL wide receiver or an anorexic-bulemic, you're not going to get down to 6% body fat. Nor would you want to. If you can get to around 10-12%, you're in the right territory for the cuts and definition you're seeking.

I can go on for quite a while about other stuff, like getting your bench to skyrocket in a hurry, but I'll shut up for now since that was not your question.