Wow, she does look grown up. Fun backgrounds. I love the 2nd one best. Do you scrapbook? You can see some of my pages on my blog.
You have such great subjects to shoot! My one main suggestion would be to learn about the "law of thirds"http://fixaphoto.homestead.com/digitalcameratips.htmlIt really strengthens the composition of pictures, rather than centering everything. This is just a quick link I found, but it gets more detailed if you want to keep looking.