Sewing a Zippered Purse Using Just an A4 Paper Sheet as a Pattern 

Using just an A4 paper sheet, you can create a pattern for a functional bag with a zippered main compartment, an exterior zippered pocket, and a slip pocket inside.
The finished bag is 22.5 cm wide and 15cm tall.
Chapters:
0:00 Creating the Pattern, Cutting
2:03 Zippered Pocket
5:43 Interior Slip Pocket
6:28 Main Compartment
11:12 Finishing the Bag