Basically I took a cone (right click on the screen to bring up the primitives menu), & selected all the vertical edges, and cut and connected them (again, right click to bring up the cut and connect commands) to create the horizontal lines.  Select a horizontal edge and go to "select-edge loop-edge loop" to select a ring all the way around the cone.  Then go to "scale-scale radial-radial Y" to increase or decrease the size of the ring.  You can do this to more than one ring at the same time if you want. Do  this til you get the shape you want.  

I have to go and won't have computer access for the day, so if you want to know how to do the indents and twist, I can't do that til later today.  You can download the latest version of Wings in the Wings forum; I think by clicking on the Wings banner.  Uncle, IM me with your email address if you want the meshes I have already made.

Sorry, gotta go!     

Bec