Trippy Tree

I'm announcing a new category: "WTF is this?" A couple of my past posts should have been in this category (skull bong, for example), but this one definitely fits.
The .jpg is named "trippy tree tattoo", and I can make out the tree trunk, but what are the other blobs around it? A weird smiley face with shark teeth? Sauron's eye? A head of some kind over on the left? What's the green thing sticking out on the right?
Any insight from you guys would be appreciated.