First of all let me say that this is one of Amy Butler's Free Patterns. You can find it on her website.
The pattern is straight forward and super easy to put together. The curved bottom is a little tricky if it's the first time you have done curved seams, but overall this bag can be made in a few hours.
I used Tula Pink's fabric line Prince Charming in Olive for the two made fabrics, I used Anna Maria Hornor's Sinister Swarm in Blueberry for the strap, and I used Patty Young's Flora & Fauna for the bottom. The lining is Water Bouquet from Amy Butler's Love line.
The only thing I would change about this bag is the width of the strap. I think I would like it better if it were about half of its size. I just love how well it matches my mat!