Subtle shadings and interesting color combinations abound when using thin confietti
Use large confetti pieces individually to create designs such as flowers, leaves, or collages. Crunch them down (wear gloves and safety glasses!) into smaller sizes for background color and detail areas.
Either way, confetti's unique thinness allows colorful shapes to be introduced, even in multiple layers, with minimal thickness buildup.
When firing them as a top layer, heat up slowly enough that they slump down and stick to the glass below before ramping up to full fuse. This will minimize beading up around the edges. This is not an issue if the confetti are laid out as the bottom layer. Of course, if you want the beaded edges, ramp up quickly for the opposite result.