hey, as mentioned above, if you'd like to go into psychiatry (which is also one of the specialties I'm interested in!!) you need to complete a medical degree, so you'd have to apply for graduate entry medicine.
however, since you're doing a masters in psychology, you could also consider pursuing a PhD in psychology, which will allow you to qualify for a clinical psychologist. I'm not super sure about the pathways, but I believe the work you can do is similar to a psychiatrists if that's interesting to you!
but as mentioned above, you can't go into psychiatry through psychology, but you can do something similar if you go into clinical psychology