Hi, your congressman/woman will likely open applications in the coming months with a deadline sometime in early fall (September/October). Then, those deemed qualified will be interviewed (or not, some MOC's do not hold interviews) and that is how the congressman will decide their nomination slate. You probably won't know if you received one until sometime between November - January. Short answer: you won't get a nomination anytime soon.
If any of this wasn't clear, go to the search tab and search for "Nominations" there is plenty of useful information there!