Well done indeed, you have become a different person - to a certain degree, that is. Keep up learning and never forget this brilliant moment!
BTW I think your instructor was quite correct to send you solo without previous announcement. The same happened to me, and though it was a big surprise (I felt nowhere near ready) it was the right way to go. I have been surprised to read some people here had their first solo announced before. Where so many things can go wrong, that seems a bad approach to me.