“You must not make.” Exodus 20:4-6 is the Second Commandment of the Ten Commandments, and the Second Commandment is three verses long, Exodus 20:4-6.
“You…yourself.” The “you” is singular. See commentary on Exodus 20:3, “you.”
“carved image.” In the biblical culture this would include any image carved out of wood or stone. In its larger sense it would also include images made other ways as well. That is similar to Ephesians 5:18 which says not to be drunk on wine, but filled with the spirit. It is not like getting drunk on wine is forbidden but getting drunk on vodka is not. The wine is representative, and here in Exodus, the “carved image” is representative of other things that get worshiped. Leviticus 26:1 mentions other forbidden objects.