These designs are done on rectangular & Square box by Mayco. Color decoration is done with Colors For Earth Glass Colors, BubbleART Glass Color and Black “Low-Fire/No-Fire Piping Paste”. Added clear course and fine and colored frit diffuses the colors and adds dimension.
This is a on-line downloadable technique.
Files are in PDF form.
This file includes step-by-step instructions, supply list, colored photos and pattern.