In most of these types of jobs you directly bill the client for licence acquisition for the type of usage (after the client approves the artwork/design). Forge

In most of these types of jobs you directly bill the client for licence acquisition for the type of usage (after the client approves the artwork/design). Forget to do that and now you need to pay out for acquiring the licence afterwards - and you'd better hope there was nobody identifiable in it because getting a modelling release afterwards can be even more expensive (after all, both the photographer and the model know they have you over a barrel). Also don't bother billing the client afterwards, after that kind of screw up you'll be on eggshells with the client. Do it twice and you definitely won't have a client to worry about.