Insecure doesn't cover how I'm feeling at the moment. Neither does secure. Apprehensive is sort of there, but too negative. Hopeful, perhaps that's it?
Maybe I should just tell you my news? I sent the synopsis and first three chapters of my fireman story to a publisher and they've asked to see the rest. There must be a word for that.
I hope that however you're feeling, you need positive words to describe your state of mind.