This is a great idea man. I'd suggest in the window prompt, when the user searches for something, give them a couple chances before just giving them the default card. Something along the lines "You searched for ____, ____, 3 images were found, do you want to continue? (or do you want to try searching something else)"
I was expecting the cards to cascade out for winning.
I don't know the size of the images the game downloads, but a card viewer/ inspection would be cool for won games, maybe the user could double click a card, and it shows a full screen version of it.