Agree with @mikezumi choose better partners.Never once tweaked anything let alone a full plastic surgery.Most ever did on a kid I had was a hair color change and usually at YA.
My male Sim I play is nothing special and pretty basic, but do make sure the other sim is attractive with good features.My kiddies are always cutie's.
If you start having babies with the Bayless family is it surprising your kid gets a huge nose or ears. :( Now you got me wanting to do a kid experiment have not done one in a while.Grab a girl have a kid show them at life stages B-Tdlr-Chld-T-YA