Lol it was kind of tricky I guess, once you have moved the top of the cover back as far as you can try gently maneuvering it at an angle.
In actual fact you will probably find in comparison with other modern cars these are fairly easy as some you have to end up dismantling half the car first (so I have heard)
You don't want to go 'brute force' really, else you will most likely end up snapping the lugs off the cover.
Martin