Software is just a set of tools. It cannot make you a great illustrator. How you use the tools is what counts.

For example http://archive.xaraxone.com/html/featured_art_.html and http://archive.xaraxone.com/FeaturedArt/nov10/ and http://archive.xaraxone.com/FeaturedArt/feb09/

To see all the fantastic art created with Xara go to http://archive.xaraxone.com and click on Featured Artists.