How to make an overall style tank top: To make an overall style tank top, find a tank top you like. Make an incision in the strap to where the overall strap would be. Take a buckle and sew it on. You may also use a desired fabric by tracing your tank top shape onto the fabric, cut it out and sew it all together. For a shortcut, cut an extra piece of fabric and sew it directly onto the tank top strap, before you sew the shoulder seams, and attach the button accordingly. Sew the overall tank top either by hand or machine to complete the project.