I do believe the person who wrote the first one is correct so I’ll just put it in a different way
Hey (friends name),
I have a teacher, (his or her) name is (teachers name) they have done a lot of cool things. This one time they did (first thing they did that you like). Also (second thing). Oh and I haven’t even said the best thing yet, (the last one). Do you have a favorite teacher too? (Or if you guys have the same teacher. You could say what’s something they’ve done that you liked)
Your friend, (your first and last name)