I have one flash story finished, two short stories getting closer and closer to completion, and a novel that needs to complete the road to the climax. Once I have one story finished and revised, it will be my first official submission.
If I do manage sell a story in the near future, I will A) start babbling like an idiot and faint out of joy, B) laugh like a maniac if I managed to sell one of my quirkier stories to an editor who understands my warped sense of humor, C) cheer and write an entry in a little "Success" file that shows that I'm not completely hopeless, D) start wondering what I'll do with the damn check while asking whether they overestimated on the pay rate, or E) do a wild combination of the above, and hit my head while doing it.
Now as for the novel, if I somehow managed to get a cool agent who can find me a cool editor who loves my back and publisher who will take it, I might lose my mind.
I will reward myself when I get the novel finished, at least to the point where I have an ending and still need to revise.