As for now, we only have one skin in Lumberjack skin tree - Lumberjack Sion. I gave this tree a thought and made up these concepts, which might work in this Lumberjack tree also - Olaf, Darius, Taric. Ofcourse, quality of pictures isn't great, because I suck at drawing, but here it goes.
After this, if this will get some support, I am thinking about Nasus, Dr. Mundo and Draven as the next champions for this skin. Comment what you think about this and if you like it, bump it up or if you don't like it ,bump it down.
Good luck on the Fields of Justice!