Hey, here are some little assets I made in blender. I’m not new to Building, but to Blender I am, I usually make Realistic/Ultra Modern/Realistic games.
The green part of the tree is a bit too high up from the ground but if its intetional then it’s fine. Making models in blender is similar to roblox you simply try to make your models more percise and detailed, that way you will always improve.
You are on the right path my friend, my only suggestion is that the leaves look a bit boring. Try to move around the edges of the cones. But for a beginner, you are killing it buddy, good job!