I am always worried about giving people advice about trimming parrot nails because I know that if they do it wrong, the results can be quite bad. So I am providing these videos strictly on an as is basis with no guarantees that this will work for you. I urge everyone to watch someone else do it in person first and to read up on it before ever attempting on your own. For those who already know what they are doing, I'm just sharing with you how I do this for Kili.
I've started rewarding her for each nail cut to try to mitigate the stress of getting nails trimmed. I used oatmeal which is one of her favorite treats. Also some older videos below that showed budgie nail trimming and parrot beak filing.