If using regular circular edible sprinkles, you can sprinkle them into the jello shots after about 10 minutes of chill time. This way the sprinkles can float down into the jello shots for a pretty overall sprinkle effect. If you are using edible glitter stars or other specific shapes, like we did in the photos, wait to sprinkle them until after the jello shots have completely chilled. This way, they keep their shape! If you sprinkle them in too soon, the glitter spreads and loses shape.