Hee hee, seems like you didn't bother with author comments this time. I'm starting to see similarities in your tank drawings. There are often pictures of cats. There are usually numbers of some kind. I really see the expressions of the blue space here. The cannons coming out look like eyes.
Extensions seem to be the main focus here. The little screws are great too. It's amazing how many of these you made. There are just so many fine details. That's why you're a great artist!