that your skirt can become your staple piece.
the last thing you want to do is add panels and then find that the skirt is too small, or has become too big. therefore, you need to make sure you take accurate measurements before you do get the sewing machine out.
the first thing you need to work out is how wide the panels should be. you can do this by working out the current width of the skirt minus the size of the final one. you should allow a couple of inches so that there is room to maneuver. you should then work out what the panel length will be.
remember to measure 