thanks guys for your replies
@AP: The leaf texture is from a fir pine, and Im not happy with they. I gonna back to PS to create new textures. thanks for the reference.
@Ulco: the cage is because I want some "close-up shots" from the bark, and export to ZBrush for the fine detail.
@zaxxon: I like me your own model, Im playing with branches values indeed, (thanks for the tip anyway), and for the link, very usefull...