Use the proper glue for your application
Use the proper backer material for your project
Always 'balance' your substrate by veneering both sides
Make sure all your equipment is ready before gluing up
Buy enough veneer to finish your project
Unseen areas of your project can use less expensive veneer
Using the proper amount of glue
If veneering over plywood, make sure to veneer cross grain
Know your veneer; it's strengths and limitations
Flatten wavy veneers before gluing them to the substrate
Apply glue to the veneer and the substrate
Make sure the caul does not overhang the substrate by too much
Use the proper finishing product that won't delaminate your veneer