Sometimes the joints like armpits and elbows have strong shadow lines that I use the blend tool to soften. Sometimes just softening the edges of the model. I tend to render at low resolution to save space on the HD (which is fine for being a hobbyist). The dodge tool works well on some of the real bright spots. Sometimes a filter is good. Sometimes I change contrast/brightness. Sometimes reduce saturation or skew certain CMY colors. There's a curve tool to play with as well. Your image, for example, look like the bikini was pasted on 2d after the render. No offense. It happens to me too. I'd probably increase the shadow line that you have and then take the bright red lining and darken it a bit as it rolls away from the light source. Maybe darken between the breasts directly on the red fringe. Maybe put in shadows around the hand on her leg so it looks like the hand is closer to the leg. Maybe reduce the brightness in the finger joints on the other hand. Things like that. I'm no expert. But go to my gallery and look at the thumb of the girl's face with the hair piece. The thumb has bright red dangling things that go off at an angle which isn't natural. That was part of the model. Then look at the full sized image. The dangling things go more or less strait down and they're green. The color change was done pixel by pixel in PS. To rotate the angle, I selected each leg, transform/rotated it, and then cleaned up the resultant disruption in the forehead texture by cutting and pasting sections that were close in tone and blending. And sometimes the only thing I do is put my name on the image.