What is the most logical next event?

How to make blueberry banana muffin mix in a jar
Clean a 1 quart wide mouth canning jar.
Layer the ingredients.
Be sure to follow the list from top to bottom; start off the layers with the baking soda first and flour last.
Ensure that all ingredients fit in the jar; always be sure to firmly press each one down before adding the next one. You can use the back of a spoon to achieve this.