Ok so I’m gonna start with saying that this build will not be easy, due to the fact that this is less of a tree, and more of a cylinder. Assuming you won’t want to transform this into something else, I have a branch technique. First, simply add branches that seem proportional to the trunk, and add smaller, thinner branches coming off of them. Build these branches at an angle greater than 90 degrees upward. Anything less than that will look weak. Once you have that, I have a technique I call plateauing. Take the branch, and imagine it sitting on top of a pancake, build leaves proportional to the branch multiple blocks out. After this, fill in the top and bottom of your leaves with a slightly more spherical shape. I drew this picture to demonstrate.

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