Proper use of commas will make your writing clear:
Example: Joe watched Estelle as she crossed the street and smiled.
In this sentence, Estelle is the one who smiled.
Example: Joe watched Estelle as she crossed the street, and smiled.
In this sentence, Joe is the one who smiled.
Example: I saw my father, the king, and George Clooney in the same afternoon.
In this sentence, the reader might think my father is the king. He is not, so:
I saw my father and the king and George Clooney in the same afternoon.
Write on.
Mary Raebel 