I know what you mean about trying to stay composed afterwards. When I was 15 I shot a buck and in my excitement, I forgot to climb down. Yes, I started down the tree steps and just let go. I fell about 12 feet and was running when I landed. My youth and vigor is the only reasonI didn't get hurt. It was nothing like your buck so I can imagine your excitement. Good job and congrats to you!
Downward hits often leave little or no blood until the body cavity begins to fill up, BTW.