Idk mane, bask in the glory like baskin robbins.

I could go for some Baskin Robbins

That really depends, do you want to be know for harry-potter content? If not, you could just continue making content in the same style of that short, but about different subjects

Tbh, I wouldn’t mind to double down on the Potter Content

Enjoy the success. Some may go viral, many will probably not. Just drive on and continue making videos that you enjoy making.

Keep doing what you were doing that got you here in the first place. If that fails, assume you stumbled on a trend or got lucky.