I'm getting braver and braver with my sewing machine all the time. One of the many reasons I love thrifting is because I can buy something for a few dollars and not freak out if I try to alter it and mess up. I saw a dress last week and immediately loved the fabric, colors and pattern. The top was really ugly (huge shoulder pads, ugly sleeves, etc.) but I brought it home anyway and cut off the top portion.
A thick band of elastic and a few zigzag stitches later, I've got myself a pretty rad skirt.