My parson male is now a bit snippy- but everyday I handle him I make sure I wait until he's within easy reach- ie not right at the back amongst branches- I have a leather glove- it's a flat gardening glove but makes quite a good platform for him to step onto- and gently and quietly and with no eye contact go in a slip my hand under his front legs- he will automatically put his front feet on the glove- I disengage his tail with my other hand- at this time He may be puffed up or biting and snapping or hissing but everyday i do the same- I make little or no reaction to his posturing, just calmness and slow movements.
When I have got him on my glove I pause briefly and remain still and look away and just let him sit for a moment , just to let him feel contact.
If I lose his feet and they wriggle off onto another branch I leave it until he's accessible again- at this early stage of handling there's no point making his experience worse and having a fight trying to control 4 feet and a tail. I wait and start again. O.k it's an effort sometimes but if I can do this now and not grab him or 'show him how's boss' I may stand a better change of having an animal that in the future that wont' ever like being handled but will not fear me or get stressed or get me stressed. There's two way to go- get in there and get it done or try a slower softer approach and for me I'm happy as with all my animals to go slow , gentle but decisive -as remkon says- being hesitant can be counterproductive .