Hi, guys. I'm sorry for writing here again. I don't mean to exploite your patience or anything like that. I try to seek the answer by myself best as I can. But right now I just don't like the sound of my voice. When I go throught passagio my voice gets thin, and it's good, as far as I know! Ken said that, like a rocketship, voice should thinness when you go up the scale. But it's just sounds annoying to me. It's more of a squeaky sound. Here, I recorded my sound:
0:35 - that's where I go through passagio. That's E4. Then I go a little bit higher to F4.
I know my pitch is not good, but right now it's not a point for me.