March's block of the month

Here's the block I taught for March's class. It's called Underground Railroad, but I did change the design a tiny bit for my own convenience.
Everyone blazed through it and they all looked fantastic. I think they all lied to me and are secret professional sewers.

I still haven't decided if I like the yellow or white better. I'm leaning more towards the white, but everyone in my class likes the yellow better.