Need to learn how to take a 2-D profile and create a 3-D non-uniform surface from it.

For example.

I draw a flower in a 2-D wire frame.
I now want to create a point somewhere in the middle of one of the pedals of the flower.
Now I want to take that point and pull it up in the Z axis with a certain surface tension, to create a 3-D form.
How can I do this in Mcam 9?

Please help.
TIA,
Brian