I am not a breeder but I have seen a friend do it several times. If I remember right here is what he does.
Take the female with either flowers or preflowers into the bathtub.
Bring in the male. Shake his pollen over the female. Let them spend the night together. Then rinse him and kill him and bag him in the bathtub. Then rinse her off. Water kills pollen, but not after 24 hours. Rinse her and let her dry before taking her back to flower room so no pollen is taken back.
I think he bagged the male to prevent more pollen spreading.
I have also heard you can take pollen from a male and use an artist paint brush to spread it on the female flowers.
I am sure more will chime in and give a better description on what I described can be improved on.
Good luck
leafminer. Hope it works out well for ya.