Has the wire snapped or just stopped working?
Once the card is off,there is a v shaped bar that is removeable,this is essential to get out the way to get your hand in.
The window motor is mounted by 3 nuts,the mounting bar for the winder mechanism is secured by 2 nuts,but the real fiddly bit is undoing the plastic clip that secures the plastic peg that is located in the base of the window.
Be ready to get some bruised wrists and a few cuts
Once the electrical connection to the motor is removed,you should be able to wiggle the plastic plug away from the glass and remove the winder mechanism from the door.
If your after a replacement,i have a few in the garage for all different doors,estate and saloon.