Plastic canvas for bag
Yarn over ( I used softy cotton and chenile )
Crochet hook 3.50 mm
Cut your plastic canvas like my diagram below.
Start from the corner ( you can choose any corne you like )
Cast on ( first ch), place the yarn at the bottom of plastic canvas (pc) . Pull out first ch from bottom of pc(first square), insert your hook to ch, inside your hook to second square from top to bottom, yo, then pullout the yarn (like make ch) . Here is the picture of it :
Make it ch around like this diagram below. I make this diagram with colourful to make you easier change the yarn.