Nervousness

anxious,at the brink of a break down,panicky,edgy,nervy,...

what about some "positive", I mean the kind of feeling you get when you are talking to sb interesting or are doing sth interesting, something like "exciting"? I mean nervous because you're kind of happy.

Anxious covers both scenarios, dread and eagerness!

What about desirous?

shaky (from happiness),jumpy...

I think we should have some examples in sentences.

e.g. You can say I was trembling with fear.
Could you say I was trembling with emotions? or I was shaking with happiness. Or I was shaking with excitment.

Yes you could Maj, but you would say 't. w. emotion' not emotions.

all of them?

Sure.

Mike, I wanted to say thanks, but this pop-up said i couln't used this word because i have used it before. Let see if I can say it: thanks.