This is an "information" post! I have added a new page to my website: "Bargello Information". There is all kinds of stuff that is helpful to know for stitching Bargello needlepoint, some basics about threads, canvas, marking techniques, color, and a few miscellaneous odds & ends.
Take a look! Maybe you'll find something useful.
The picture is of some greeting cards I made many years ago. Just basic Bargello patterns.