Step by Step Sewing Tutorial in Pictures. DIY Make Up Bag. http://www.handmadiya.com/2015/10/easy-cosmetics-bag-tutorial.html
This isn't in English but one can see how it's done from the illustrations... looks to be totes upcycled from T-shirts or other sleeveless tops. Cute fabrics! And they're lined. Could be nice gift for a teacher.