Creating large, flat porcelain sculptures can be challenging due to the risk of warping during drying and firing. To achieve flawless results, follow these proven methods:

1. Slow and Even Drying: Cover the piece with plastic or a damp cloth to slow moisture evaporation, ensuring uniform drying and reducing stress cracks.

2. Reinforce with Slabs or Supports: Use internal supports like clay ribs or wire frames to maintain structural integrity. For very large pieces, consider dividing them into smaller sections.

3. Optimal Clay Selection: Choose a clay body with high grog or sand content to minimize shrinkage. Porcelain blends with added chamotte are ideal for flat forms.

4. Controlled Kiln Firing: Fire at a slower rate with a pre-heat (candling) stage to remove residual moisture. Place the sculpture on a kiln shelf with wadding or stilts to allow even heat circulation.

5. Avoid Thin Edges: Thicker edges dry more evenly, reducing warping. Bevel or round edges to distribute tension.

By combining these techniques, artists can significantly reduce warping and achieve stunning, distortion-free porcelain sculptures.