These are part of production designs for my thesis based on Korean folk tale.
The palace is located under the sea but my instructor, Chris, said doesn't look like place to live.
He suggested me to add fishes and something like seaweed stuff to illustrate the palace under the sea. I totally agree with his opinion so I'll fix it.
Regarding turtle submarine, Chris and my classmates seemed like design. However I don't really happy with it so I'll fix the shape and add funtional details, and inside design.
Overall, I enjoyed to design this kinds of stuff. This is really challenging for me cuz I've never design the props or buildings before. I found it's not really different from character design in terms of how to develope. So far I like my design.