We used Anaheim peppers to make mild green chilies. I am not sure if you can use other types of peppers.
Step One- Wash & Broil
Place the washed peppers on a baking sheet & broil until the skins are black and bubbled. I should have broiled these a little longer to make it easier to take the skins off.
Step Two- Cool
Once they are bubbly, place directly into a bowl of ice water. This should help make the skins come off easier.