Lines

1. I did horrible on this rule, I'm not even joking. This was the closest photo I could find that could be considered a line rule. 

2. Dancing 

3. A bit, but it could be mistaken as an aerobics or PE class, except for the uniforms they're wearing. 

4. Find a more unique way of incorporating lines, rather than just the reflection and handrails, this rule did not work for me at all.