After your successful Eagle Scout Board of Review, you should first make at least one copy of the original Eagle Scout Rank Application that your Board of Review members signed (both sides). You may want other copies for yourself and/or your Eagle Coach, but you must turn in the original to Circle Ten Council (along with some (simple) paperwork that they provide). You must turn in a copy to your Troop's Advancement so they can record it in your Troop's record-keeping system (e.g., TroopMaster, if that is what your Troop uses).
You are an Eagle Scout on the day you successfully complete your Eagle Scout Board of Review (and, by the way, for the rest of your life)! The paperwork you submit to Circle Ten Council will in turn be submitted to BSA "national" for further approval/documentation. When Council receives BSA's approval, your Scoutmaster will be notified (because of that extra (simple) paperwork that was turned in with your approved Eagle Scout Rank Application) and you may pick up your award from the Council office. Note that Eagle Scout Ross Perot provides much of what you will pick up at Council -- e.g., your Eagle pin, your parent pins, your mentor pin, etc. If you wish to purchase an Eagle Scout patch to sew on your uniform, you will need to bring "proof" that you are an Eagle Scout; that extra copy you made (above) for personal use will suffice for this purpose!
Now, on to planning your Eagle Scout Court of Honor ... !!
Note: If you remain an active member of your Troop, you now have the opportunity to earn Eagle Palms if you are still under 18 years old. If you are already 18 years old, your Adult Leader record will reflect that you are an Eagle Scout (and what date you earned it)!