
To make it more like the tree in your picture you could create a lofted surface for the top of the tree, a lofted surface for the base of the tree and another lofted surface for the trunk.

It thickens the lines that define the tree into a mesh. You will still need to install Cocoon and Weaverbird though and you can enable that part of the definition when you are ready. I've disable the Cocoon and WB bit so the model loads quicker. The definition uses Cocoon and Weaverbird plugins (and Shortest Walk obvs!).

It creates a lofted surface of the tree you want to create then populates that surface with random points and then finds the shortest walk between points around either end of the surface through the random points on the surface.
