Each evolution comes in stages. Here, dear friends, you would say a transition phase would be appropriate in order to make the step from the 3D assembly of animals to the sculpting of human beings. And I agree, as can be seen below. Because that step is a really big one. Human beings, although being mere mammals themselves, seem so much harder to sculpt!
Unfortunately, I made these mermaids after my first human sculptures (see earlier), but I assure you, if I were to do it again, I consider following my own advice!