So the happier you both are, the happier your children will be. And your happiness will inspire them to learn the skills that will help them to succeed in life. And have good relationships of their own. You don't have to do anything special. Just let them see you being affectionate, or having a quiet conversation together.
Above all, children are hugely interested in everything you do. So one of the best ways of getting your child to do something is by personal example. Which is why the children of people who enjoy a lot of sport, for example, need little persuasion to take part themselves.
Your children are bound to be the centre of your world, but they're not the be all and end of it. Just follow your instincts, and be happy together. Because that's what produces the most successful children!
All the best,
Chris