I feel bad for him. He did seem nervous and quite a few things seemed to go wrong.
Added to it being pretty standard stuff made for a weak act.
He dropped a card which made it even more obvious that the cards the judges got did not
require the pack. What if it was the one with helicopter that fell?
He did keep saying "what are you thinking of?" instead of "what is on your card?". I think this
was an attempt to subtly con the viewers. If they had not questioned him and David just
said goldfish some viewers would subconsciously feel like he had produced something that
David was just thinking. Obviously they know there were cards but it would work. But didn't.
To continue with that confusion became very sloppy along with other stumbles. He obviously
forced the cards on to them. Cut the pack etc. was diversion. The way it went made it so obvious!
Someone posted a pic showing you could see an empty shoe beside his foot at one point.
This was not his fault although it does add to the problems.
Just before the reveal the curtain twitched noticeably and there was a bit of black sheet
stuck to propeller which suggests the helicopter had a sheet torn off but it didn't come off
fully. This part took far too long and the stalling with the line under the question mark, not
to mention the pointlessness of the question mark anyway added nothing (except time).
All with him starting nervous and getting worse. Then Simon showing that no one had
in the audience had written helicopter!
Poor guy.