As far as using two decks instead of one, there are two back-side images (one for redflip, and one for blueflip). As fas as removing jokers, just do not include them in your image folder (or just do not use them). It might make the images easier to work with if you renamed the image files and/or grouped them by suits in image sub-folders.
scenario 3936 has them grouped in sub-folders by suits and the files named in a more convenient manner.