I've created/played in a variety of bands over the years and love making music. I also have a degree in/experience recording and producing music (as well as sound design for video games and film).

Unfortunately, even with all of this, I can't offer much more advice as my interest is always rooted in texture and character over technique and precision. Or, to put it another way, I'd rather listen to Iggy Pop or Tom Waits sing over say Mariah Carey. So for me I'd be listening for whether or not your voice is interesting/expressive before I'd listen for technical ability.

Cyran0