What is easy way to practice fs bigspin
Personally I would say just practice fs 180 and 360 shove it's the try put them together, also invade you aren't already get a rolling start
Into the grass probably
Frontside shoves and frontside 180 or going fakie or on a surface that doesn't roll that much.
(if regular) spin the board, turn your body and try to catch it just with your left foot. if you have that 4 out of 5. then you can try to land it with slow speed 270 the board and 90 your body. the rest is just a 90 turn. if you have this the rest will come itself and one day you make perfect ones :)