Playability:
Don't worry about your game not working. Exporting to browser can be a daunting task at first. Your game looks like it has a lot of promise. Keep it up.
Theme:
Nice work with the theme tying directly to your gameplay. Would love to see more of this.
Cleverness:
Love the idea of using live stage performance as the basis for mini-games. Good inspiration from Friday Night Funkin here.
Artistic Style:
Love the sketchy style and different character animations.