All Zentangles are different and none are wrong. Try not to use an eraser because there are no mistakes.
Zentangles are supposed to calm you sodont feet if an idea doesn't come.
I made a mushroom but you can make any random shape you want or just random lines
Draw squiggles in any shape and any direction. These will be the borders for the tangles.
You can do anything you want, but remember that if you make a mistake to just go with it. I made one in the bottom right corner
And I just rolled with it.
Some can be complex and some can be simple
And there you go. All Zentangles are different so the possibilities are infinite.