Taking a good print takes considerable care.  You may wish to make an appointment to get it done for you.ccWhichever way, keep your camera ready - you will want to record this moment.

Clay/plaster imprint tips

Depending on the impression materials, there may need to be some mixing done.  Apply baby oil to the infant's hand or foot - this keeps the impression material from sticking to the baby.  The impression may be captured by gently pressing the baby's hand or foot into the impression material.  Depending on the material used, the impression material will be needed to be left to be air-dryed for a period (e.g. overnight) or baked.

Ink imprint tips

Appy more link to make dark prints and less for lighter prints.

Time available

Time available will depend on the materials being used.  Be sure to read the instructions.