I watched this class on a whim but when Sara mentioned that feeling of making a pattern that you feel is just "meh" and you don't know how to make it better, I immediately thought of my platypus pattern that I created a few weeks ago. 

I had thrown it up on Redbubble but I wasn't happy with it despite many iterations. Anyway, with Sara's guidelines and checklist I feel like my pattern is 100% better. 

Here's the before (on a Redbubble pillow mockup):

 

And here is the after. I added texture, increased contrast, added some depth and another design element:

 

Thanks for the great class, Sara!