Full power
Full left rudder
Full up
Full left aileron.
When the plane stabilizes in a full power spin, slowly, holding everything else, move the ailerons over toward the right.
Watch the plane and you should see the nose raise up. The spin will look different from a normal spin, even though it will probably not get actually horizontal. This is a flat spin mode.
To recover, release the controls. In extreme cases, put in opposite rudder after releasing.