Looking at your pboto, if you're talking about the driver's side, there's another bolt under the clutch pedal which holds the slanting footrest onto a metal frame underneath. Take that bolt out, slide the footrest upwards and it should disengage if I remember right. Then the panel pulls out from underneath the same as the passenger side one does. Other than the one bolt each side, both just use push-in clips. It can feel like you're going to break it removing it, but a sharp tug from underneath should do the trick.