How do you describe action in a first person narrative?

I'm writing a short story and I'd like to write it in a first person point of view because I've never done it before and I think it's help me learn if I tried.

The issue that I've run into is: How do I describe action without force feeding the reader?

The girl in the story is sitting in the tree tops of a forest, describing (thinking about) her surroundings after a heavy storm. I'm finished with that section, now I want to move onto her climbing down into her tree house and move on with the story. However I don't just want her to say 'Well, I guess I'll climb down now..' and simply move onto her being in her home.

Would it still be a first person narrative if I described her descent through more of a third person view? IE: "She swings her head back and drops to the branch directly below her, catching it and twisting around, propelling herself into the makeshift hut below."

I know it might be a silly question, but that sort of description is all I know.