HI!! Sorry for the belated reply, I am still a newbie to forums, I had no Idea that a reply was made!
Thanks for the comments 
The faces are all completed individually customized burgers. The suits are Patty, Cheese, Tomato and Lettuce for spade, diamond, heart and clover respectively.
I tried uploading some images of the faces but many of the file sizes were too big :/ The best way to see more of the deck would be visiting the instagram page:
https://www.instagram.com/flaminko_playingcards/
I'll try to resize and post some images though 
The Instagram page is a little confusing because it appears like you have art from three different decks there.
The Burger deck looks nice, but it's a little too minimalist in its design. You should look to something like the Chicken Nuggets deck for inspiration as well as the advertising art of some major burger chains that people would recognize around the world. If you want a more nostalgic feel, look at OLD ad art from those companies, from the 1970s and 1980s.
Another issue to consider is that there's a certain sameness to the three decks you presented - it gives one a "been there, done that" feeling. Make the art more distinctive and you might catch more attention for it, especially from your previous customers who've seen your older work.