What will our babies look like? Genetic factors :-)

JK
Wanted to start a group to post anything you've heard for figuring out what your baby may look like. Just for fun, obviously to me atleast it's not set in stone, but curious! 
I found that you take the average height of both parents and add 2 in to it to determine height. 
I'm a red head so lots of theories or factors there. 
Curly hair is dominant? 
Blue eyes it both parents have a recessive gene for blue eyes, we both have blue eyes so is this a given? My SO mom has brown eyes. 
What have you found?