Starts with a basic statement, a controlling idea.

The chipmunk ran.

The chipmunk ran  / up the man’s arm to his shoulder.

NOTE:  a prepositional phrase is added to show direction and location

Chattering excitedly,  / the chipmunk ran  / up the man’s arm to his shoulder.

NOTE:  a participle phrase is added to the beginning to show specific movement and motion, to capture action

Chattering excitedly, / the chipmunk ran / up the man’s arm to his shoulder, / where he sat and scolded the strangers with bright and jealous eyes.

NOTE:  The writer pauses after the word “shoulder” to say something more about the word with a where- phrase voice-over.

Chattering excitedly, / the chipmunk ran / up the man’s arms to his shoulder, / where he sat and scolded the strangers with bright and jealous eyes, / his little striped body twitching with fury.

NOTE:  The writer zooms in on the image of the chipmunk with a noun + -ing verb combination to show specific graphic detail using an absolute phrase.