I've done it many times before, but every time there are new things to know. If your area is safely blue, maybe GOTV in other jurisdictions will be your contribution. But competent poll workers are important, too.
You would be amazed how dumb mistakes can screw up many,many legitimately cast ballots.
Also keeping improper activity away from a polling place is important and a part of a pollworker's job.
Think about contacting your local Registrar of Voters office to see if they need help. Info is likely on your sample ballot or other materials from the agency that is responsible for preparing for elections.