all i see are lines and lines. brown or green lines, smoothed and shaded. all i see are only shaded green or brown lines, i dont see a wood texture, or something that could be called Nature.
altho im not a big fan of saikann's line ghoul, he atleast managed to use it correctly, and give some details, but still, the line method is still somewhat newbish.
wrapped on the model it looks worse, it looks like nothing realistic, and it doesnt look like anything at all.
you can do better than that, try something else