I think most people agree that a mix of photos is best. Pro shot are great but there's always a suspicion they've been photoshopped. So mix in some selfies, being careful, of course, to make sure you don't show any ink that could cause people who know you to find out what you're doing. A short video is also good because videos are harder to mess with.

The most graphic photo of you from behind is not as flattering as it could be.  Personally, I think there is a point where you should have a little mystery and leave a little to the imagination.  I think the vagina photos that are all over Switter lately are a turn-off.   I would leave this one out all together, but if you are intent on keeping this photo up, I would suggest you have it photo shopped and erase the small blemishes on your backside.  If you present uniformity in your skin tone and body parts, you are more likely to attract customers. I'm not suggesting you try to fool anybody, but just like you put makeup on your face for photos, a little photoshopping of the skin to clean up small imperfections on other parts of your body makes for a better presentation.   Just my opinion.