Try combining actions:
1. Click Love, then Heart, then Pulse
2. Click Calm, then Moon, then Breathe
3. Click Excited, then Star, then Spin

Keyboard shortcuts:
Space - Random action    B - Bounce    S - Spin

Learning:
setEmotion() changes colors and particle behavior
morphTo() changes the shape form
express() triggers temporary animations
View page source to see the code!