I got the template from here: https://sourceforge.net/projects/vector-cards/
I edited the entire deck at once but I can't export a single card. Not used to this program. I would hate to start all over again.

I get what you are saying but I don't know where to start. I imported the entire playing card template and then colored in sections and then added custom Jokers. I didn't select a layer to do that, I just edited the whole template. Can my artwork be saved? Is there a way to select one card at a time?

I have finished designing my custom deck of card for Kickstarter. How do I export a single playing card out of the entire template? I need to have it 300 dpi and it needs to be the size of a standard poker card. Thank you!