Some behind the scenes & prop photos I found on Propstore's Facebook page:
Also on the Starship Modeller site theres a cool AT-AT build & Snow-Speeders by REL:
More links for the AT-AT
http://sovereignreplicas.com/clay_atat_09.jpg
http://sovereignreplicas.com/clay_atat_10.jpg
http://sovereignreplicas.com/clay_atat_11.jpg
http://sovereignreplicas.com/clay_atat_12.jpg
http://sovereignreplicas.com/clay_atat_13.jpg
http://sovereignreplicas.com/clay_atat_14.jpg
http://sovereignreplicas.com/clay_atat_16.jpg
http://sovereignreplicas.com/clay_atat_17.jpg
http://sovereignreplicas.com/clay_atat_18.jpg
http://sovereignreplicas.com/clay_atat_19.jpg
http://sovereignreplicas.com/clay_atat_20.jpg
& more links for the speeders:
http://sovereignreplicas.com/cb_speeder23.jpg
http://sovereignreplicas.com/cb_speeder24.jpg
http://sovereignreplicas.com/cb_speeder25.jpg
http://sovereignreplicas.com/cb_speeder26.jpg
http://sovereignreplicas.com/cb_speeder27.jpg
http://sovereignreplicas.com/cb_speeder28.jpg
http://sovereignreplicas.com/cb_speeder29.jpg
http://sovereignreplicas.com/cb_speeder31.jpg
http://sovereignreplicas.com/cb_speeder33.jpg
J