You did a great job.
If someone wants to have a deeper understanding of brazilian portuguese pronunciation, I would recommend two books:
- Talking brazilian (Mário A. Perini) - Yale Language Series. I would recommend this book to any brazilian portuguese learner.
- Fonética e fonologia do português (Thaïs Cristófaro Silva) - Editora Contexto. This is an academic book to brazilian linguistics students, but it's not too complicated.
Both have audio CDs, and can be found on Amazon.