If i may go slightly off topic for a moment...
Unlock-it:
there is nothing more impressive to the customer than opening the door without any damage.
This is so true. But what it reminds me of is a saying i heard many times during some of my training 'picking is a waste of time, its a dead art and the customers are not going to be happy when you turn up and pick there lock open in a few minuits'.. or words to that effect.
Now i will be honest and admit that this comes from my early training with the MLA. Please dont get me wrong the training i received in bench work, fitting, repair, key cutting and a hundred other things was absolutly first rate, but that saying remains and its wrong.
When i have gained entry for a customer they have never been anything but delighted that i have opened their door without any damage, especially if they have had previous experiance of a locksmith who's favorite pick come from the power tools isle in B&Q.
Practise and study and be selective with your training. Then practise and then practice some more... and then when you think you have it sorted do some more practice
Sorry mild rant over
Cheers
Steve