Hacer is irregular.
Explanation
Use the opposite "es" ending in negative commands.
Ser is irregular.
Use the opposite "as" ending in negative commands.
Ir is irregular.
Venir is irregular.
With negative commands, put the pronoun "te" out in front of the command. "The NO pulls the PRO."
Use the usted form in positive commands.
With positive commands, attach the pronoun "te" to the end of the command.