Everyone gave really good advice, and I'll add to what has already been said.
Keeping this traditions is really fun and important, but as we grow up we tend to get caught up on all the fun that we forget to tell the kids the real meaning of the holiday. I was born here, grew up in Mexico, and my husband is Caucasian; so as you can imagine I have had to make many adjustments throughout the years. I went from putting up a Nativity scene, Las Posadas, and putting my shoe out for "Los Reyes Magos", to putting up a Christmas Tree, and getting presents under it.
Seems like you are already doing really good maintaining the traditions alive.
It has been a lot of fun celebrating all these very special days, but the one thing I remember the most is being with my family; the values, ethics, and morals have helped me stay out of trouble, work for what I want, and taught to fight for what I believe in. All from my parents and grandma telling me the history behind the holiday and its importance.