[3dvisuals dude] : thanks a lot. I hope too to animate the at-at, but first the modeling ;-)
I hope to see your work.
I will try to explain in detail the modeling, in the limit of my english :-)

[Pilou] : Coucou Pilou :-)

[Michael] : Hello Michael. Thanks a lot. I'm happy to see your comments. I hope that this wip will be the first of thousand :-)
I will try to show the differents steps of the creation. It's sure than I make errors, but i hope that everybody can correct me, and to learn.

So, I'm stopping to speak, and go to the pictures :

The continuation of the leg :
the shapes are quite simple.