Functionality Question

I am thinking about using this plugin.
Before I invest time with it, I would like to know what kind of file the designer creates? specifically is it a vector or raster file format created with the designer? I do not see any mention of this detail on the description page.
Secondly, I did not see anything visual about the backend for the plugin, where the created file may be found in the backend or if it gets emailed to the webmaster, or how one receives the artwork file. Thank you.