Sometimes it’s really tough to be able to estimate exactly how long work with a client will take.
Especially in the early years of your practice, and in particular when a client contacts you asking you to do something you know is within your competency, but you’ve never done for a (paid) client before, it’s almost impossible to assign an accurate amount of time to the project in front of you. Without the accurate amount of time, you will probably quote a way-too-low price for the work.
I call it “scope creep” – and thus (just in time for Halloween!) here is your tip to make sure you get paid, even when the scope of your work “creeps” past your estimate.