Anatomy is always something to improve when it comes to sexual art. Not need to know how to draw it milimetrically, but practising a "per***al anatomy dummy" with notions of real anatomy, it makes the whole thing lot easier and it makes you go faster to the second part: details. Detailing the dirty parts (textures, lighting, liquid consistencies) it helps to make it more naughty, so that means more happy clients willing to pay for their fantasies to be drawn.

Yogur, you are super awesome. Thanks for you input. I'll be taking you advice tonight!