Shag Bag From Recycled T-Shirts

Step 7 Backing, gaps, and (optional) pockets

Fold your base fabric in half, good sides together, with the furry t-shirt bits down.  (This is how your bag will be arranged when it's done.)

Measure the back side, and cut your backing t-shirt to fit. 

(Make sure you leave a bit of extra fabric for the hem - about 1/4 - 1/2". I serged my edges because i could, but if you don't have a serger a zigzag stitch will prevent the edges from raveling, or you can just be extra-careful about folding before you hem.)

Pin it onto the base fabric.  Pin the center as well as the edges - you don't want a bunch of puckers in the center.  Think of this as basting, as if you're quilting, and give the shirt a few runs across the center with your sewing machine to really get it situated properly.

Fill in the gap between your previous t-shirt strips and the backing t-shirt with more strips. I cut them from my backing t-shirt to help it blend in a bit better, but you can certainly continue with your original color(s).

NOTE:
Now is also the time to add internal pockets, as the order of operations (sewing on pockets or backing t-shirt first) will vary depending on the size and location of both your pockets and your t-shirt's design.  I did the (probably too-big) big internal pocket first, then had to wrestle with sewing down the shirt without making the pocket unusable.  To top it off, I added another pocket on the OUTSIDE - extra positioning fun.  Plan better than I did.