First time teaching jitters

A month ago was my first substituting job. No, I haven't switched positions, I am still a staff assistant but my boss wanted me to substitute for one of the 2nd grade classes for a few hours.
I was so nervous about teaching kids as a whole class solo. I actually didn't sleep much the night before. I knew we had a morning assembly so I was going to be able slowly adjust myself into being the teacher.
So the next morning I went to work and went right into the classroom and grabbed the kids and went to the assembly. The assembly was so fun and the kids learned a lot and actually had a great time.
After the assembly we went back to the room and started on the math lesson which was on counting coins. It was a lot of fun teaching them what a half dollar was. Most of the kids already knew what to do when they got the assignment so they were done within 15 minutes, while I helped other kids.
Then we worked on English and on Adjectives. To be honest I have never liked English and it still doesn't make that much sense to me so I am glad they knew what to do already.
After that we had about an hour left so I had them think about what they learned in the assembly and I picked a few kids to tell me what they had learned. It was so much fun inspiring them, boosting them up, and telling them that they can do whatever they set their minds to. It also helped that dad and Tia (one of my coworkers I've known since I was in elementary school, she's like an aunt to me, so I call her Tia) stood outside of the classroom and cheered me on.
I have definitely have found what I want to do for the rest of my life and couldn't be happier!!