Yeah. The one thing I HATE is when people only use vibrato on long notes, never on short notes.

It drives me crazy >_<. I hope you get the solo =D.

I know this sounds crazy but I can do a vibrato with a (very) slight shake of the right hand. I'm not sure the teacher likes it... I only do it for fun, usually at the end of tunes if they have a long note. Don't see much need for it on clarinet,though, yet.