Depends on HOW your senator does nominations. If S/He does a "Competitive" slate, then you are on a list of 10 nominees to the academy from your senator. The academy will now choose 1 of those 10, who is qualified, to receive an appointment. The remaining nominees on the list will go into the pool, and compete nationally for the remaining appointments. (Usually about 500 slots).
Your application, if completed, has more than likely already be evaluated by the academy. The review board started looking at completed applications the first of October.
Not knowing if your MOC uses competitive slates, ranked slates with a principal nomination, or a combo with a principal #1 nominee, and all others competitive; it's hard to say what the "Next Step" is. All we can say is "Hurry up and Wait". Continue to get as many more nominations as you can. Update your application if something significant is accomplished. Continue to apply to other colleges/universities. Enjoy your senior year. Best of luck. Mike....