deductions

my son has a 1099 from  his comapny,he drives to 15 different properties and picks up dog waste,

when I did his taxes there was no change is what he owed after dedustions. He uses  his  own car, gas, phone and wifi for mapping locations, I added these into deductions but he still  owes the same to  fed that he did before I  added the deductions, am I doing something wrong? thank you