Hopefully this will upload properly. I didn't much like the straight tree trunks in the treemaker either. So, I got into the terrain editor with a lattice and created this. I used 2 lattices and crisscrossed them to get the effect. I drew the trunk using many tiny lines drawn over and over starting at the tip of each branch and ending at the bottom of the trunk with to get a layered craggy look. The tips of the branchs need to be very fine lines I set the terrain editor to very detailed, but not massive. When finished I created my tree in the tree editor, then pushed the trunk size to the smallest possible and played with the leaf setting until they fit the Lattice trunk I had created.