OK, a couple of you were close, carving is part of it,BUT, first it has to be turned, start by turning base, 4 wings down, turn over and turn 4 wings up, choose 3 best wings and remove 4th [carve with mini carver] turn over remove 3 of the down wings, that leaves 3up and one down, make sense?, from there on it is sanding, maily by hand, this project took me 5 hours to complete, I put it up for sale at $120 with no takers, the demonstrator that showed how it was done sells his for $500 upwards, same size.
Jimbo