Quoting E.K.O =D
this looks pretty accurate! i really like it, but its a bit big, and you should have added round pieces on the legs! btw can you check out my latest moc?
Actually, it's correct size. If you base it on the head size of the minifig, it's the minifig that's big, not the AT-RT. Anyways, I didn't really require to place circular plates on the legs, because they already bare a circular shape at the joints. Putting circular plates on the legs would only make them more flimsy, and bulky looking. Also, yes, I will comment on a current MOC of your's :)