Hey there, i just played your island and i like the design of the tank , looks pretty good, maybe can use some little fine tuning on some edges, but overall it looks great.
it may be a little to big and the island itself is too small, you have to consider 2-3 ships docking in + 2-4 abandoned shipyards.
idk how to feel about all those perfectly round floating islands, but also idk if it would look better without them
the island can definetly use some more size though + some things scattered around the island (rocks, military posts?,barricades?, barracks?)
hope i wasn't too harsh, but that's just how feedback works for me
Much much luck to you as a fellow newbie creator
may we all create awesome content
(that will hopefully make it into the game)

For a tank that size, it lacks detail, made it look like a scaled up model of a small tank, overall it's a nice concept. However, I dont think there were little floating islands on the foundation, you can add some "Atlas-ish" thing onto those flaoting spherical rocks.

I would love feedback on this island! I'm still new to island creation and this is my 2nd island, so I still have a lot to learn.