Fusing a panel that will later be used for slumping

The snowflakes from the Colour de Verre molds worked, although I hope that the next ones I make are even better.  I intend to
tack fuse these to small glass squares which I will later use for slumping.  So following the instructions which are linked to the
Colour de Verre  Delphi web site, I took two 3 and 3/4" squares of glass, one 3mm blue transparent and the other 2mm clear along with another, one 3 mm green and a 2 mm clear glass which I am fusing with the following firing schedule which I slightly altered:

400dph.......................................1250 degrees....................................Hold 30 min.
600dph.......................................1420 degrees....................................Hold 10 min.
FULL............................................900 degrees......................................Hold 60 min.
100 dph........................................300 degrees....................................off

The firing schedule that I altered had segment 1 heating at 300 dph until 1250 degrees and segment 2 also heating at 300 degrees, but I thought that would go too slowly through the devitrification phase, so I sped it up.  Otherwise all remains the same.