To be honest with you this is not my favorite bag I have ever made but it works. The thing is this huge bag doesn't really hold shape which drives me crazy. I used some interfacing for the exterior plus extra piece for the bottom part but probably not enough. The pattern is pretty easy. There is just one thing to be aware of the exterior and lining are the same size but you need some addition for the double fold made on top of exterior piece. As Krista suggests in her post you can either decrease the interior height or increase the height of exterior.
|Quilted interfacing on bottom part.|
|I sewed the handles to the top of the bag once fully assembled.|