Thank you very much for your comments, if you see the resulting picture is not as sharp as the original one because I had to convert it to bitmap a lot of times to speed up xara and to be able to re-apply the erase tool over and over again.

Angelize, about the tutorial, Gare has uploaded a similar tutorial at http://www.xaraxone.com/tutorials/re...-pro-x-part-2/ I think it shows a similar process I followed.
Again, thank you very much.