When I made Lillian’s Trick or Treat bag I was originally going to make it two inches in depth. Once I finished the outside and really looked at the bag I realized that I wanted it to be a little wider. Luckily, it was an easy fix!
All that I had to do was turn the bag wrong side out. Then I matched up the seams again and drew a line across that was three inches long. I then sewed along the line the same as I did before. Cut off the excess fabric and I had a bag with a depth of three inches instead of two.
I’m sure you already know this but this is only possible if you want to make a deeper bag. If I had decided that I wanted a depth of one inch instead of two I would have had to completely redo the bag.