Nurbs curve to Surface

Hello All,

I have 1 query. I have made a Degree 3 closed NURBS curve (with 8 different NURBS curve).The resulting curve resembles something like an amoeba. 

Now if i make this closed curve into surface, the resulting surface does not exactly follow the curve. At the protruding edges, the surface falls out of the curve. Whereas at the edges which are going in, the surface forms is a curve of degree-1 i.e. not a smooth curve but lines.

What i want to know is, is this a normal thing in GH? when i have to print, will it print like a proper curve?

Also, at the moment, i have joined all curves together and connected it to surface component to get a surface. If there is any better way, please advise me.

I have attached the design representation and also part of my GH definition.

Any advise will be highly appreciated.

cheers

aB