when you chock the wheel make sure you chock them on both sides so it can not roll forward or backwards, 1st time may make you pee a little
I have a pc of steel rod I use so I am away from tire some, insert end on top of shoe resting against the web, tap a couple times with 2 pound hammer, you can see if the pads are stuck to drum
make sure you have air pressure built up and bus in neutral!!!
again chock tires on both sides and do not have arms or legs under the tires when they brake loose