Just wanted to share a little tip with you to photograph children (or any other subject for that matter...).
You probably heard it already but it's worth saying it again: change angles, change perspectives... For example while taking photographs of your little ones don't hesitate to crawl on the floor with them to see what they see, then stand up and photograph them from above to remember later how small they were, then photograph them from different other heights!
Also don't always focus on them, focus on what they're doing. Make a close-up on their hands, eyes, and then zoom-out to get the all picture!
And the best thing is that you don't even need a fancy camera to do any of that and you will get amazing results and memories!