There are a few things you can do to save a logo in Illustrator. The first is to make sure that the logo is properly saved as a vector file. This will ensure that it can be easily edited and used again. Next, you should make sure that the logo is properly sized. Make sure that it is not too small or too large, and make sure that it is not too blurry or too clear. Finally, you should make sure that the logo has been properly saved as a PNG file. This will ensure that it can be easily edited and used again.