well thanks for the quick reply. the method of lofting the 2 curves did work but the control points for the nurb surface were only create on the perimeter of the surface not evenly distributed throughout the body of the surface (indicated by red box). and as for the circle and oval shapes i also drew them in the attached picture. mr gibson gave me the tip to draw two perpendicular lines with control points then extruding one line along the other. doing this created evenly distributed control points throughout the whole surface and i want to replicate this and use it with non lineal 2d forms (like the ones shown in the picture).