I don't understand how you can have a pastel albino. In order for a snake to show visible albino traits, it would need to be homozygous, but how could it also be pastel if a pastel snake has to have at least one pastel allele.
Yes, you are correct. a pastel bred to an albino would make het albinos and pastel het albinos. a pastel het albino bred to another het albino gets you the Pastel Albino.