Cool, I practised that for years, have lots of tools lying around, even made a lot of them myself.
Good luck learning.
One thing almost everyone does wrong the first time is that it requires a feather lite touch, they tend to force it..
Let gravity control your picks and treat them like a women
And before I forget, if you decide to practise on your own doorlocks be aware that a forensic will be able to determine that lockpicks have been used on the lock.
It leaves behind a charactaristic scratching pattern that is unmistakeable.