Mmkay, so I've been screaming for a while now, and am pretty good usually.But there are times when I'll be doing my highs, and my voice just sounds like straight air coming out, real raspy and nasty sounding. But theres times where I can go long, and no problem. And it only happens with high, my lows and mids are fine.

Suggestions please?
Check your hydrated it realli helps
* If my punctuation seems off, it's because my shift button is broken *