Matt,
The pictures look great. I would recommend a photo box cube like you find on eBay. They will help you a lot and photo lamps to go along with it. I purchased a rebel xt around February or so and I love it, but I found out the camera is not the only thing needed. The other items I mentioned above will help a lot. And like everything else, practice....practice....practice taking pictures with all of the different modes and angles.