Find a tree. Check✔
Build a staircase around it using your favourite wood. Is it usable? Check✔
Dig out some leaves and make a platform.
Other side, dig out some holes for balconies.
Add a second floor like the first and put fences in the balconies. Check✔
Build a ladder out of the tree on wood planks.
Build a crows nest around.
From a distance. Yours might look completely different depending on the tree.
This guide was requested by ♥ natnat5 ♥. I hope you enjoyed it :)