A few things I can think of.
- remember that all the childcare , cooking , and housework is not to be left to your wife. She will.be exhausted from feeding etc so will love any help . Resentment will soon follow if you don't help out.
- never put your daughter down for any reason, listen to her and don't jump in immediately shouting . Under no circumstances don't you ever tell your daughter "your spots need sorting out" or "your hair is too long" or my personal favourite "there's no way you are a size 14, your at least a 20"
- lots of cuddles and kisses
- never stress over mess. Spend time with your child rather than cleaning all day.
- do your fair share of nappies
- basically don't be how my father was and you can't go wrong.
Lastly treat your wife how you want your daughter's partner to treat her. She will watch and learn from your behaviour. Also ensure you encourage breastfeeding for as long as possible and don't blindly vaccinate. Those things are full of toxin and actually cause death!!!!