on pins and needles

(idiom) to be very excited and nervous about something

Example Sentence:

I am on pins and needles waiting for the new Britney Spears album to come out. I can’t wait!

Similar idioms:

1. have one’s heart in one’s mouth
2. on edge
3. butterflies in one’s stomach
4. have butterflies
5. jittery
6. fire away
7. fall through