Another Photo Session

I have been wanting to continue to improve my photography skills so I've decided to try and have some photo sessions with Emily & Abby...and anyone else I can convince. I figure the only way I'm going to get better is if I just keep practicing. So this past Sunday I hung a sheet up in Emily's room as she has some nice natural light coming in from her windows. I put on my 50mm lens and took the camera off automatic. They weren't very long sessions with either girl as you can only get 4 year olds to be happy to be in pictures for so long. I was happy with a couple of the pictures that I took. I just bought Photoshop and hope to get it up and running in the next couple days and then I'll play around with the pictures a little more and see if I can improve them a little but for now here are a few of my favorites. I appreciate any feedback. Already I know I need to get a better backdrop (any suggestions??) as well as a reflector to bounce some of the light back onto them. It's a learning process but it sure was fun.