Clone body area. Duplicate a few times and transform to make thin lines on top of new body area. Add small drop shadows to the new lines to help them stand out a bit more.
Copy a section from the top, duplicate three times, warp and reposition to make mouth outline. Copy chain a few times, transform and attach to "top lip".
Add some yellow highlights and play around with the hue, saturation and blending modes some more.
The last layer I did was a bright red flood fill which was blended on saturation mode. That is how the different colors in the final water splashes were made.