liquid light is fun stuff ..
you might consider adding a hardener
to the emulsion before you coat whatever it is you want to coat
and maybe using a hardening fixer if you can. poor adhesion may also
be caused by too smooth a surface and the emulsion not able to anchor itself
onto whatever it is you want to print on. i love printing images onto glass
instead of paper, its a lot of fun but the prep is critical seeing glass is so smooth.
there is an emulsion making thread / group here on apug, and the light farm ( lightfarm.com )
is also a group that deals with hand coating liquid emulsions. while these groups deal
with making emulsions by hand ( instead of buying a bottle of it
) the issues are the same
when it comes to using it ... you can also look for a book called silver gelatin, a user's guide to liquid photographic emulsion ...
have fun!
john