Hey, that sounds lovely and a bit tricky. You could trace the natural veins on a paper or a light‑preview and then lay your UVs along those lines – it keeps the seams hidden where the leaf naturally wants to divide. If you mirror one side onto the other, the veins stay symmetrical, and the seam will feel like a natural crease. Just remember to keep the edges soft and blend the UV islands a little, so the texture doesn’t look too “cut.” Hope that helps!