Making an Idiot of One's Self

I posted on my favorite Tarot board about a new deck but as I had been expecting five different decks at once I mistook it for another and said my piece about it calling it the wrong deck. Now here is the issue....should I hang my virtual head and feel like a complete idiot or is it simply a normal mistake and only agravated by having put my mistaken identity of this deck in my first hour of ownership out there for everyone to see?

How much of an idiot am I?

And how much time will I waste wondering about it?