Girl, you have come SO FAR as a doller. I absolutely adore the bikini doll; love the frame you made and the creativity involved with using the underwater head upside down. Ku-dos!
Sorry I've been so behind on my tutorials; it takes a while to screen shot everything and put it all together nicely, lol. Glad you figured out the magic of the HSV noise option, though.
One thing you might try, and since you are using GIMP I know you can do this, it playing with shadows and reflections. What I do is copy the layer I'm working with, rotate it so it's in the correct position, and make it one block of color or use the opacity tool (located above your layers in that dialogue) to make things more or less translucent. It really helps brings the dolls together and make them look like a complete scene rather than pasted things. I think it could really have added some extra oomph to you midnight stroll doll, which is very nice as it is, btw