Having not only changed teacher but voice type 18 months ago (I sang as a mezzo soprano for 9 years) it is a real time of transition vocally for me. Being a soprano is completely right for me but it is taking time for my technique to adjust. One of the main areas I have been religiously working on is trying to
make my sound richer and warmer at the top. I have a real tendency to sing shrill at the top end of my voice which results in a harsh and sharp sound. After months of making small adjustments (making sure I have pressure before sounding the note, making sure the tongue and jaw are in the correct position before singing etc) I finally felt like I hit the nail on the head in my lesson yesterday.
As a mezzo I have been so used to my voice resonating in a particular place in my face that I have not yet accessed the higher resonances. Yesterday, while also maintaining an open throat (again something I tend to close when singing in the higher register) I made sure I felt the resonances higher and low and behold the sound was richer and warmer and my tongue in particular went naturally into the place it needed to be. It felt good to finally have cracked this one piece of the puzzle. I'm now itching to get practising with my new found voice, especially as Puccini is on the menu for the cruise.
For me it is a life long journey perfecting my technique and although it can be deathly frustrating at times, persisting with it and 'getting it' is worth everything.