Very nice of you!
I have finished the head job.
During the first assembly I noticed that the perimeter of the head was a bit edgy. It assembles fine and gives a nice result but well, I thought it could be a bit rounder. So the problem was: How to add more faces to an unfold without having access to the original 3D model?
The big advantage of the model is that it is symmetrical and that each petal has the same shape. Increasing the polycount should be possible by editing the unfolded pattern in my favourite vector program (CorelDRAW). So I took one of the petals ...
... and traced the outlines:
Then I re-aligned the traced outline and divided it into the single faces that formed the whole petal:
You see that there are four different shapes (I coloured them differently so that it is easier for you to follow my description).
I took one of the elements, added a guide line that went straight through the middle and drew two lines (red) from one side to the middle:
The lines were centered:
and the edges closed to get a new complete shape:
That way I ended up with a new face which was half as wide than the original face (important: the heigth remained unchanged).
Then I doubled the new face and arranged the parts side by side:
Dang - one face was turned into two faces!
That was quite OK with me but now a new problem arouse: If you increase the number of faces assembly of the current unfold will be trickier and maybe not as clean because there are twice as many petals to be glued together. So I changed the assembly and turned the petals into rings. Now if you compare the new design (right) with the old one (left) you'll see this:
The face count was doubled which leads to a nicer curvature - exactly what I wanted to achieve.
