Here is a short video on turn drills to help improve your tango turns. My FUNdamentals class asked me to video some of the exercises that I do, so that they can remember them outside of class :-) Sorry about the sound: I was fighting a cold and sounded horrible the day I shot the footage for the drills, so I gave up talking and just typed the information on the video.
It is much harder to practice by yourself than with a partner. First, it's easier to practice when someone else says, "OK, put on your shoes now and let's go!" Also, when you have a partner, you can hold onto them, and that makes getting around the corners easier than on your own. Lastly, I tend to practice longer when I have someone to talk to; it's hard to make yourself do more than a few songs.
Making the video made me do a lot more practice that day! I kept shooting video, looking at it, and then going back to do it again. I think I did turn drills for almost an hour before I got interrupted by my family! So maybe we should all just turn on the camera and go for it! It never looks good, by the way. I can see every one of the mistakes I made here. I hope that, by leaving them in, you can see that it's not about perfect, it's about practice.