No worries.I really appreciate your message here. Honestly, I was a bit upset at that time. But later on, I think having feedback is better than no feedback even it is a tough one :).
Thanks for the recommendations and I will think it through. My original plan is practicing the vowels, consonants and stress before 50. If everything works fine, I will focus more on intonnation and melody.
I am glad that you achieved so much by reading NCE II. It definitely motives the rest of us.
Congratulation again! Keep up the good work!