Anywho, Here is the fun all laid out. I broke it down to a bunch of steps to spell it out, but this is something easy that a beginner could master quickly :)
You need: A Sewing Machine
Old Tee Shirts
Scissors
Pins
Thread
Step by Step-
STEP 1:
Flip the shirt inside out and fold a section in at one of the shirts bottom corners so it tucks flat inside itself. I don't measure mine out, but feel free to test out different fold lengths to create the depth/ bottom of the bag.
