My 1st submission to a Weekly Challenge!
Is based on an old drawing I had. I recalled the Jolly name, because that's how my family used to call the Joker's card: The Jolly.
I extended the invitation to participate to the members of a pixelart club I admin. Last Challenge had 7 entries; I hope that number can be increased at least by one =D
Commissions open! | 
Weekly Challenge: Clowns!
Nice! My constructive criticism would be to practice on clusters and readability. The pattern on the card is so intricate that it looks like noise at this scale. And the pattern on the Joker doesn't look like a checker pattern unless you zoom in a lot. One tip would be to reduce the complexity and exaggerate these patterns. Hope this helps. :)