once i trace the image and it gives me the monochrome picture, is there a way to make a negative of that?
You can create anegative by placing any kind of border around the image and MAKING PATH on the trace and new border. If you want to create a border that is the same shape as the outline of your trace, you can create a MALE TOOLPATH on the external border of you trace (just make sure to turn leads in off) then merge it with the orginal by selecting everything and MAKING PATH once again.