framing doors and windows in green timber frame

[Aeneas61]

I am in the process of building a traditional timber frame using green timbers hewn from the log. I understand that most choose to erect the frame first, then roof, then cover walls add doors widows and floors. Great, but I have found next to nothing online about shrinkage of the door and window frames, how to actually install them. Are there tricks for a green timber frame such as log cabin builders use, or do timber frames not shrink enough to make issues? I want to frame the doors and windows as simply and traditionally as possible.
Thanks to all,
Josh

[Dave Shepard]

Timbers shrink very little over their length, so you shouldn't have to worry about it in a timber frame. Logs shrink a lot more across their width, which is why you have to make special window bucks for log structures.