How do you use a tubular lock pick?
Essentially you set the picks in a tubular lock pick to "past
flush" meaning they extend beyond the housing they're normally
inside.
Once there, press them flush by pushing the pick down on a table
or other flat surface.
Next, tighten the collar of the tubular lock pick.
Once the collar is snug, place it in the key in knob cylinder
for the lock. This should "impression" the required key onto your
tubular lock pick.
Extract the pick slowly while turning it, and you should open
the lock. You should also be left with the calibrations for that
lock's key on your pick, which will enable you to duplicate it or
simply reset your pick the next time you want to pick that
lock.