Good imagery for a tree to put in a descriptive essay?

I need to write an essay where I describe an experience in nature that has inspired me. I want to write about a tree, and i really want to describe it as this majestic thing with it's branches spreading out above the earth, but i'm really not good at descriptive imagery. If there's anyone that's good with descriptive details that really put a good image in the reader's head, your help would be verrrry appreciated :)