Enjoy your final image!
If you find that, despite your best efforts, you cannot get a significantly better result in StarTools than in any (yes any!) other software, please contact us.
As of 1.7, enhanced mouse controls are implemented; Zoom in.
Chances are that the image looks terrible, which is - believe it or not - the point.
You can convert everything you see to a format you find convenient. Give it a try!