In this tutorial I have written out your measurements and directions for the gift card holder I did in the live video on November 14, 2019
In the first step you want to cut your base card stock and your mat pieces using the dimensions shown below.
Next you want to score your base sheet as shown below
Next go ahead and apply your mat pieces to the base piece like below. I used a 1/2 in corner trimmer to round my top and bottom corners. Also note that the small sections have the mats placed away from their center score mark rather than centered, this will make sense in a later step.
Now add score tape to one of the small sections on the outside as shown. Then pre-fold at your score lines as well like the next picture.
Now close the small section leaving the flap part on the inside of your project.
Next you want to trim 1/8 inch of the top of the flap.
Now wrap your belly band piece around the project and adhere it to itself and add any finishing touches you would like.