What should I do if I lost at a school fight?

The fight, was planned. And I lost, the most humiliating thing that happened is that he threw punches at my face very well, and I didn't get to punch him, because he was punching my face or so. Luckily, I didn't get a black eye. Now, I want to have revenge on his face so bad. But there is something that bothers me, I think it's fear. How to remove it? and I don't know why. He's a one inch taller than me. I'm like 5'6. Probably, I can't get to get a clear view to punch him because I was dodging sideways.