Well, I'm not trying to be sarcastic, but this is why it's important to do some homework and to research the proper techniques before doing something for the first time. My dad once told me,"Just because you're not a craftsman, doesn't mean you don't WORK like one."
You could remove the baseboards and tile the wall. There are tiles that are curved at the joint between the wall and floor-----you've seen these in commercial installations. Those may work. It would be nice if they had a bullnose one them to make a smooth tansition onto the wall. But if not, and you don't like the look of a tile ending on the wall with an edge, you can grout it with a 45 degree. I've done that several times and it looks nice.