Wow, that was a GREAT event!!! If you are in Philly, check out the shop. It's a 150 yr old church that has been revamped to be a tattoo shop and design studio. There were so many people there. Excellent time!
Like @Hogridersaid, there's no way to be sure until it completely heals, 4-6 weeks. Calm down and wait, even if it's the world's worst, there's nothing to do at this point.