That shot is wrong.
Assuming and only that you said that the AT-Sts are on a hill. Otherwise the perspective is off
The camera is below AT AT and we see its bottom part when the AT-ST is in right view that normaly we should see its upper parts and to be honest veeery far away.
its a bit tricky.
I made this mockup for an other reason showing how can be the shot with the other leg things
I know in motion cant be done... The shot doenst help/support these enhancements
-Angel
BTW, real quick guys: are there other free image hosting sites other than ImageShack out there?
EDIT:
And for the door a very quicky to show my idea.
ye ye I know there should be a neck there. just catch the concept