Umm well it's hard to draw the line between being sleazy and being sexual but I think it's maybe about frame, if you come across as a value-taker it seems sleazy, whereas if you come across as a value-giver it seems sexual. You might also want to try to hint at stuff by means of sexual innuendo, etc, rather than directly referencing sex between you and her. Also it depends how much connection you have -- for example grabbing a girl in a club and pulling her in for a dance could be considered sleazy (depending on your fundamentals though), whereas introducing yourself by name and then doing the same thing while looking deeply in her eyes would not be sleazy at all, because you already had the connection of introducing yourself. You might also want to read the article "how not to be the creepy guy"... although sleazy is different from creepy, there might still be overlap if you're a beginner.
Ray
PS Bottom line though, you'll probably come across sleazy at times, it's all part of learning calibration, Smith is on the money there.