I love my parents and on the whole i had a good childhood...but there are a few things i'm really clear that i won't be doing with my dc.
I won't ignore the fact that my dd has c cup boobs when shes 9 and then belatedly take her to buy a couple of market 'crop tops' and refuse to buy her a badly needed underwired bra for years because 'they cause cancer' 
I had 34dd boobs when i was 13 and still wearing rubbish cheap cotton girls bras that gave me absolutely no support.
I also ripped my legs to shreds with my dads proper razor trying to shave them in secret, because i wasn't allowed. I had thick black hair on my legs from a young age - which was mortifying.
I will be as physically affectionate with my children as they feel comfortable with and i hope that means we can still hug and kiss when they're adults. I feel a bit weird hugging my parents tbh because they initiated a kind of physical distance when i hit puberty. I'm not much of a tactile person, but with my kids i am, because i want them to feel comfortable with physical contact (on their own terms of course). I'll also be open about sex, relationships and consent, not just ignore the entire topic in a very catholic way and advocate abstinance and ignorance. I had a lot of dysfunctional/unpleasant experiences with men as a young woman because of a real lack of understanding about sex and consent. Not necessarily my parents fault, but definitely something that potentially could have been avoided with a more open approach to sex.
I'll try not to be a moody passive aggressive arse, and not have strops whenever we go on family day trips/holidays, causing all the dc to tread on eggshells and develop people pleasing traits. My dad was a bugger for doing this, but so was my mum to a lesser extent. I honestly believe its affected my ability to deal with conflict and so I have a tendency to be P.A. myself. I try very hard not to be like this with DH and the dc, because i did not enjoy it as a kid. As an adult i'm able to rationalise it and ignore them when they get like this, plus they live far away so i see them much less. However I never want my kids to feel scared of expressing an opinion or disagreeing with me for fear of my reaction. I hope to encourage them to discuss things in a respectful way and i'll listen to them and not make them feel stupid because they don't agree with me
Phew - bit of an essay there!
for all the posters on this thread who were neglected or abused by their parents. To have come out the other side and be in a position to raise dc in a more positive way (or even decide not to have dc) makes you truly amazing IMHO.