How do I make the cracks in the Porcelain Crackle more prominent?
Because the cracks are the same color as the Base Coat you will need to highlight them. Allow the crackle to dry at least 24 hours, and then rub in Aging glaze in your choice of Asphaltum (for lighter colored Base Coats) or Pickling White (for darker colored Base Coats). Or, for a colorful look use the Translucent Color glazes. Use a dry, clean rag and rub on the glaze in a circular pattern.