StitchArtist is not an attempt at fully automatic design creation. It will not attempt to ‘convert an image’ into embroidery; It does not contain photo-to-stitch for example. These are all reasonable tasks, but are not the same as what StitchArtist is.
It is also not a ‘customizing’ or ‘editing’ program for the manipulation of existing embroidery designs. You may load designs so that you can add stitches to them, but they are not alterable in most ways.