USE OF REFINE IS ABSOLUTELY FINE .LET'S TAKE A OVAL FROM SHAPES. CONVERT TO EDITABLE SPLINES ,SELECT REFINE TO CONNECT ONLY.ERECT POINTS AS PER OVAL IN ELEVATION FRONT VIEW. APPLY FOR SURFACE UNDER MODIFY.SELECT DIVIDE ,SELECT MESOSMOOTH TWICE AND EDIT POLYGONS.DO INSETS.ALSO BEFORE APPLYING SURFACE SWEEP IS ALSO APPLIED.