If you ever get over that feeling, it might be time to reconsider taking up another hobby. I still get a little shaky when shooting at a large buck, as probably most of us do and i've killed plenty of bucks. Heck, my dad admitted to getting a little case of buck fever every now and then and he is 52 years old and killed over 100 bucks. Congrats on your first buck, i killed my first deer when i was 13 too.

Enjoy that feeling and hope it last forever....