What he is good at, and if you look at Everests video of all the goals of 2016, he doesn't actually have a spot to put it. So no matter how much a keeper works on his pens they really haven't got a clue which is his favoured spot.
He was 'relieved' of duties, I believe, after missing one at Fratton Park, I was there. I also believe that was the only one he ever missed for us (forget Palarse, that was a goal). I can also understand why Wardy got penalty duties seeing as he only had to look at the back of the net to score.