The leaves in the way are a problem. It's hard to say that, as the images are good, the focus is crisp, the light is good, nice reflections. Everything was working well.
You probably had no choice. The refuge has strict rules on where you can and can't be. In most areas you have to stay in your "mobile blind", aka your vehicle. Getting out and moving closer simply isn't an option. Even in the area where they have a walkway, you're restricted. Also, racoons don't spook real easily, but there's a good chance they would have been scared off.
That said, the photos are nice for documentation, especially the second image with it's factor of "Look how many racoons I saw!" The first one is nice as well with the little guy on the right peaking at you. They're good shots and you did pretty well.
Unfortunately, the leaves detract enough to keep it from being outstanding. That's part of the challenge of wildlife photography. There's a reason guys buy 600 mm lens and spend all day hiding in blinds. It's not easy to shoot most wildlife, and the stuff you can shoot easily isn't that popular. (When's the last time you looked at a photo of a Canadian Goose in the park and thought "Wow, what a great shot! How did he do that?")
Also, keep in mind that different uses have different standards. You could post this on Facebook and almost certainly would get lots of compliments. If you're looking for something to print large and sell, this shot might not work quite so well.