The first thing we need to do is pre-form
(bend) the legs ready to insert the device in
the board. To do this, hold the resistor in
your hand with your thumb nail resting on
the end of the resistor body:
With your finger, bend the leg towards you
at 90 degrees so that the lead is formed
around your thumb nail.
So, it looks like this. Then do the same to
the other leg so both are now bent in the
same direction: