HOW CAN I MAKE THIS BASE LOOK BETTER

inside view

i was trying to make a like a crown of ice spikes around the top but idk if that would look good

add texturing and gradients and more depth to the build

and add more detail

yeah but I'm not sure what blocks look good with it (i would tp you but idk how Jo_wimf feels about it)

maybe this

What is the name of that last block

I choose snow for the floor lemme know what other blocks i can use to make it better

what is it supposed to be?

add windows like castle style maybe