I sent a picture of my private parts to my new online date
Why do you think it is appropriate to send lewd photos to your date?
That is what I do for all my dates
You don't even know this person, so you shouldn't be sending nude photos of yourself. You don't have any indication that she wanted to see such a thing, so it was highly inappropriate of you to do it.
OMG, they love it and they ask me to send more.
I must say, I'm very surprised to hear that, but what I said before still stands. When you have just met someone online, there is very little chance that she wants to see photos of your private parts. This seems to have worked for you the last few times, but it is not appropriate to do it again in the future.