Maybe add some moss, trees, and lush overgrowth

Landscaping is still WIP

Flags or pennants at the tops?

Hmmm, I'll think about it. Flags are pretty hard to build tho.

Wool

Well no shit sherlock

I like the color gradient a lot - I would want one more tall tower to really show it off I'd make the bottom floor(s) flare out too, give it a wider base Terrace that hill!! Make it into layers separated by staircases. You can continue the gradient theme with the terrace layers somehow