Some tips are:
1. Always rotate the image so that the nose or the eyes or the mouth is straight. I usually do the nose bottom as a flat horizontal and move the mouth and eyes if needed to align it (sliders in the asymmetrical shape tab). See how I turned Zito before placing the points. That matters because while the software is looking for lines to shape the face (from the image) it is also assuming you are following directions in that the face in the photo is more or less a mugshot and the place markers will fall in certain areas. See how the zito pic was turned before I loaded it...
2. Crop it so it is just the face and then resize the image to 1000 pixels as the height in photo editing software so it is big when you import it into the fg maker.
3. If you have something wrong in the image try to fix it in the source file before making the facegen (a scratch, a shadow to lighten, mustache to darken, etc.)
4. the points to the side of the mouth should be a straight line from the respective mouth points - it doesn't matter where the neck is (even though the example in the fg software makes it look like where the neck is meeting the cheek). I was rushing on this one and my cheek ones are a little lower than they ought to be but that's easy to tweak in the fg.
5. I'll add this Zito to my other thread tomorrow