For Any large content transformation process, the good coding standard in XSLT is modularize your code. Some of the key features are:
--Normalization: making input content to be in standard format before doing the main transformation
--Break down the main transformation program based on the functionality you are trying to achieve
--Avoid using Extension function as different processor may give improper results.
--Avoid invalid XML transformation output file even for intermediate transformation
--Avoid hard coding any values or parameter.
--Alway provide default parameter values
--Generate log messages to keep track of processing


thanks
Anil