First and foremost determine your attitude after you break the spin (or any other unusual attitude for that matter). You first stop with your eyes should be the airspeed indicator. If it’s rapidly increasing, you’re in a dive and your next step should be to get the throttle to idle - PRONTO. If your airspeed is rapidly decreasing, you’re in a climb and you need to increase the throttle to full power to delay the onset of a stall.
If you’re in a climb - relieve aft elevator pressure or push forward on the yoke until the nose of the aircraft returns to the horizon. Once you’re in a level pitch attitude, roll wings level with aileron input. Then set power and trim for straight and level flight.
If you’re in a dive - This one is far riskier as you’re both rapidly accelerating towards Vno and Vne, not to mention about to have an appointment with terra firma if you don’t do something quick about your situation. As such your corrections here need to be prompt but not excessive such that you induce a secondary stall or overloading the airframe, causing structural damage or failure. Your first step here will be to ROLL WINGS LEVEL. Attempting to recover here by first applying aft elevator pressure before rolling wings level may place the aircraft into an even tighter spiral with your inputs pushing the airfram to its structural load looks mitslimits. AttemptingAttempting to apply elevator pressure combined with aileron inputs at speeds at or beyond Va can potentially overload the airframe as well, resulting in structural damage, so your second step if you’re in a dive after reducing your throttle to idle MUST BE TO ROLL YOUR WINGS LEVEL. If you cannot ascertain your attitude by looking outside of the aircraft, look at your attitude and roll the airplane level accordingly. Once you have wings level, apply aft elevator pressure, being careful not to over stress the airfram nor so aggressive that you exceed the critical angle of attack induce a secondary stall. Once level, set power and trim for straight and level flight.
So to sum up:
In a climb - indicated by rapidly DECREASING AIRSPEED:
Throttle - Wide Open
Alleviate aft elevator pressure / push forward on the yoke until nose level with horizon.
Roll wings level
Set power and trim for straight and level flight.
In a dive - indicated by rapidly INCREASING AIRSPEED:
Throttle - Closed
ROLL WINGS LEVEL
Apply aft elevator pressure until nose level with horizon
Set power and trim for straight and level flight.