Net leaf vein mold.  Delphi glass recommends following firing schedule:

300 dph...................................1360 degrees......................hold 20 mins
300 dph....................................1455 degrees.....................hold 5 mins
 full...........................................900 degrees.......................hold 1 hour
100 dph.....................................700 degrees.............................off and then slump recommended firing is:

350dph......................................1100 degrees..............................10 mins
350 dph......................................1250 degrees..............................hold 15 mins
Full.............................................900 degrees................................hold 1hour
100 dph.......................................700 degrees...............................off