I don't know whether you are allowed to distribute .xfr files?? Some of these plant creation softwares have strange conditions/EULA's/licences/you name it...
For instance: anything you create with Onyx software is not allowed to be distributed.
So if you're allowed to send .xfr's then I'm happy to have a look at them.
So far I think they look pretty good. What I'd like to see is less straight branches/twigs and more randomness in angle of branches and twigs.
If you're surrounded by these trees why don't you shoot your textures yourself?
On an overcast day it's ideal to shoot bark textures and if you have a (flatbed)scanner then you can scan (groups of) needles and such.
Cheers,
Martin