Will this crime show up on my crb??? job interview tomorrow!!!?

Ok... when i was 17 years old and did something extremely stupid!! i hung around with the wrong crowd and i stole someone credit card.. i withdrew �300 out of the cash machine, anyways... an hour later i was sitting on a park bench looking at the money and broke down in tears! i realised what i did was so terribly wrong and i phoned the police.. when they turned up i confessed everything! I gave all the money back and i was arrested, i spent the night in the cell and the next day after the interview i got a FINAL warning... I am now 23 and a completely changed person!! i mean i accidentally got home from asda the other day realising i didn't pay for an item and drove back to pay for it! anyways the reason i am asking this question is because i have a job interview for care work and they would like me to pay for an enhanced CRB check! i was just wondering will this incident show up and cause me not to get the job?? thank you so much for your time and answers are very much appreciated!