How do you change the head gasket on a Honda Civic?

Major repair that requires skill and expertise. As this is a interference engine, if this repair is done incorrectly, engine damage will occur. Take it to a professional.

If your asking you shoudent be doing no but really if you know your way around a motor good like you can do spark plugs clutches oil changes it shoudent be to big of a step up just watch what you do