A small multilevel tree farm
Edit : this farm turns out to be very very slow stay tuned for a new one in the near future
I'll make another instructable when i get at least one comment.
Step 1: The Base
Then once you find the area build a grid pattern out of wood or rock (each hole will be a tree) then souround it with chosen material to make a box. fill the empty spaces with dirt
Step 2: Upwards
Step 3: Level 2
Step 4: The Roof
Step 5: Plant
plant the trees in the dirt and places torch's on the cobble or wood or whatever you used.