Hi,try to use the tree trunk of the dead trees and choose a texture you like most for the material instead of the original one (fototexture ?).For the leaves you can get some textures of the freestuff-area (high-definition)and apply them on alpha-planes.From the point of view shown in the picture you do not have to built the complete tree to get a more realistic result. rollmops :-)

http://www.fredivoss.de 

...yippi ah yeah or something like that...