How do you remove the window crank on a Opel/Vauxhall Corsa?

I'm trying to remove the inside door cover in order to try and fix the lock. Stupid thing has stopped working properly and I think i might be able to fix it from the inside but can't get past the window handle. Incidentally if you know how to fix problem car door locks any advice would be mightly appreciated.|||The window winder handle is held on by a small clip on the shaft of the handle.If you turn it slowly while pushing the panel back you should see it.A small hook made from a clothes hanger should be enough to pull it out The lock might just be needing a spray of wd 40,hope this helps|||It varies about the door lock,it could be different things depending on the problem you have been getting.But the window winder handle is secured by a spring clip immediately behind the winder handle.A screw driver should access it.|||Push the door panel away from the window winder ,turn the winder and you will see a spring clip pull the clip upwards and the handle should pull off the shaft .