[ DIY ] How to make a very small and simple DC motor speed controller. Using MOSFET (IRF, FQP)

[ DIY : creative ideas ] How to make DC motor rpm controller using MOSFET.
==List of parts==
mosfet ________________________1
variable resistor________________1
terminal block__________________1
diode___________________________1
03:13_solder the MOSFET.
04:16_solder the variable resistor.
05:00_solder the flyback diode.
06:22_solder the DC(+)V wire on the input side.