My best piece of advice still being an amateur is to definitely get off auto. I was stuck in auto for so long until I finally had enough of post processing (and sometimes having no luck in that dept either). White balance you can always change around in PP (post processing, so I am told) but I always set my WB for whatever setting I am in...I also generally keep my camera mode in Aperture Priority mode because for me, picking the shutter speed always seems like the difficult part for me. Keep your ISO low (100-200) on a nice sunny day (or even an overcast day is fine). Cute kids and nice shots, but the your camera definitely metered for the white fence and completely overpowered the picture. I like the second photo best because it's very candid, but check your composition...the blurred out background is always nice for a shot like this, but I am still focused on the slide and the house behind her. I would have done this shot vertically or cropped it vertically. The first thing I make sure of, is that my subject is clear and that nothing is taking away from it. It's tough...lot's of things to check before you start snapping shots, but once it becomes a habit, it comes naturally. =)