Hi Anis, so here's an example of how you could get a better surface from your particular curve layout.

I aligned the control points at the tip and also note that I added a circle in there which tends to help to even out the shaping of the tip to make it more proportioned to a dome as it comes together to the pole.

Also note that you should select all the curves and make 1 single big network for the whole thing instead of doing it in separate pieces.


But if you make it by modifying surface control points of a surface of revolution (as in lyes example), that will tend to give the best smooth quality.


- Michael