You are very lucky.

It probably works the same as any other relationship - as long as you keep the communication going things will be fine. The average conversation with kids usually goes like this:

Mom: Hey! How was school today?
Kid: Fine...

That's not exactly what I'd call banter. Personally I got pats on the back for doing good things but that was pretty much where it ended. And we had a lot of disagreements about things which led to them judging me and me shutting them out. Truth be told I had to get rid of quite few bad habits from that as well. When I was 18 one of my biggest issues was getting over the fact that my parents would judge me for the very behaviours they created in me. Had I not come to grips with that situation it would be very easy to hold resentment towards them.

But they aren't bad parents in any sense of the word. I wasn't abused or neglected. I didn't have everything but I always had enough. But there were still issues there that had I not gained maturity from those around me that I would still wrestle with. So sometimes it's the little things that mean the most.

I think the basic stuff like keeping judgements back until they are necessary and keeping the lines of communication going are most important. No one needs you to be super mom but you'll probably end up that way if you just stay invloved.