When seeking to extend your time on this hunk of rock, I suggest that watching a video of a girl with perfect boobs doing her thing as being the way to do it. Of course, you may have your thoughts/ideas about how to go about doing it, and those thoughts and ideas are valid; however, I think that my idea of dreaming about perfect titties is much better.
So, to the point that I was making earlier, I invite you to check out even more perfect boobs over at a website that knows a thing, or two, about nice tits. That site? That site is PerfectD.com. Perfect!