Bought a shirt with an ugly print on the back? Then I have a solution to your problem! All you need is the shirt, some scrap fabric (big enough to cover the back), scissors, pins, thread and a sewing machine.
1. Pin the fabric down flat against the shirt and pin around the seam of the back piece. Make sure to pin as close to the seam as possible, this is so you know where to cut the fabric.
2. Cut around the pins, leaving a 1cm seam allowance.
3. Tuck the excess under to hide the edge and pin the fabric as close to the seam, so it looks like the fabric was the original back piece.
4. Using a zig-zag stitch, stitch as close to the seam as possible around the whole of the fabric piece, to secure it to the shirt.