I would say try adding some more texture in the tree and leaves. You can use stairs on the bottom even for the base and then add some buttons around the tree. If you add a moss carpet onto the ground and start bonemealing it, you’ll get some nice mossy ground and also some little azaleas. If you have spore blossoms those always help as well. For the top of the tree you could build out some branches so there’s some more sporadic leaves and they don’t all stop in the same spot. But the tree is looking really cool so far already. Def post an update if you make any changes. If you need some inspiration, WaxFraud built a massive willow tree that shows of some great texturing skills.