I need help with Mcretor tree properties

I want to create a biome and trees suitable for that biome. I tried to do these with the feature property and I didn't understand anything. My tree will look like an acacia tree, but it will have branch-like leafy protrusions. When I try to add them with the structure, they appear in a very ordered and orderly manner, so it does not look natural at all. Can anyone help me with a photo or a nice explanation?

(I'm sorry, English is not my native language.)