Creating porcelain sculptures with embedded luminescent materials is a fascinating blend of traditional ceramic art and modern innovation. The process requires careful planning and execution to ensure both aesthetic appeal and functional longevity.

1. Material Compatibility: Choose luminescent materials that can withstand high kiln temperatures without losing their glow properties. Phosphorescent pigments or rare-earth-doped aluminates are popular choices due to their heat resistance.

2. Firing Techniques: Adjust kiln temperatures and firing schedules to preserve the luminescent effects. Over-firing can degrade the glow, while under-firing may compromise the porcelain's strength.

3. Layering and Embedding: Strategically layer luminescent materials within the porcelain clay or apply them as surface coatings. Embedded methods often yield longer-lasting effects compared to post-firing applications.

4. Glaze Considerations: Opt for translucent or clear glazes to maximize light transmission. Avoid opaque glazes that might dull the luminescent glow.

5. Design Integration: Plan the sculpture's form to highlight the luminescent features, such as creating thin sections or intricate patterns that enhance light emission.

By balancing these factors, artists can create captivating porcelain sculptures that glow with ethereal beauty, merging craftsmanship with cutting-edge material science.