In this mornings commercial session i did an eve Taylor facial on a client. shes a regular clients and she comes to us every Friday. I  did a masq using a goarse . when i finished the treatment i wrote the bill but forgot to add the masq onto it. The masq is £4 extra added onto a Eve Taylor radiant facial. When my client got to the reception desk she ask the receptionist to make sure to add the masq to bill which made us look unprofessional as the therapist and also as the college.So today ive learned a valueable lesson to make sure i add extras onto bills and make sure everythings correct.