Square for charity bag

This is my square modification design. First, I made it only 15 cm. Many of my friends love this design. They really enjoy play with it. So, I decided to make a new version for 25 cm. I'll be use on our charity project.

Then... I thought about how to joining them together? I try to make a new version. I name it "vertical strip". Cause if you see. You cant see where I make a joining. It only look like a vertical strip in it. So... if you see the side of the bag.. you'll see vertical strip, if you see in front of the bag you'll see a round in a square. Play with minimal 2 colours of yarn. Hmmm, I really satisfied with my creation :)