Blender : Modelling with cross sections
By Toussaint Frédéric
Translated from french by Saraja Olivier

 
S  t  e  p   5 :

The top of our sprayer-can should be circular. To achieve this, select the highest curve and edit it (TAB-KEY or  ).  B-Select vertices and move them to get a circular shape. Don't forget to leave the edit mode when the modifications are done.

Be careful not to delete any point, because for the surface to be skinned from these curves, each layer must have exactly the same number of vertices.