If your supervisor starts having a go at it in a way that is not being constructive then challenge him then and there. Just poiltly stop him and ask him to frame his comments in a positive way as you find this a lot more helpful to your revisions. If you can't do this (I hate confrontations) or if he can't do it just make your notes on his thoughts and then when you get out reframe them yourself in a positive way...be a glass half full rather than a glass half empty kinda person!!!! Hopefully there will only be minor comnments and you'll feel on top of the world....believe in yourself and in your ability to complete this x
Well done Jojo. Its good you feel confident. Remember at the end of the day it is 'your' work, 'your' PhD not theirs & supervisors are there in an advisory capicity not a God-like capacity.