Here is a tutorial video.
This one is in English.
This video is still shots of a three tipped (headed?) Grincsfa.
I love the alienesque look of it.
Here are some more examples and any other interesting tree that caught my eye.
I see so much Creepmas potential in these.
Speaking of the Grinch, I love this mashup that's linked to teefury.com but I couldn't find it there.