Congrats!
I always like setting goals for myself PvP-wise.
You might try to achieve 250 wins. Or 500. Or 1000. The list goes on and on.
If you ever get bored of the game, you might want to try out different challenges such as the No Chest Challenge, No Armor Challenge, or the F5 Challenge.
And obviously, take breaks. Don't play MCSG every second of your life. You need to do other things to keep you sane.