The problem is in making the assumption that a random stranger wants to see your nude shots.
*nods* That and also assuming women always think the way men do.
Men may be aroused by the image of genitalia, but women usually are not. Things like eyes, abs, butt, and hair are more powerful attractors. But emotional maturity, the ability to empathize, a good sense of humor, loyalty, intelligence, and financial stability (by that, I don't mean the man provides the woman $$$, rather that the man isn't going to leech $$$ off the woman) are equally if not more effective.
By sending a picture of your nether regions as your first move, you've flat out taken yourself out of the running.