Rio/Charlotte missionary turned out to be difficult to add prego belly. Because of her hands, the upper torso is in layer above legs. So it is a bit hard to add prego belly to be in layer below legs while above torso.
Also modifying segments is not easy, because single segment, like a torso or leg, is not a single drawn shape but 4 shapes instead with one clipping another in layer above. I wonder what led Crow to make it such complicated way.