I’ve written a (free to use) online Calligraphy paper guide generator some of you may find useful.
You can adjust up to 6 horizontal lines, slant lines etc visually.
You can also add text in any of the 100s of Google fonts and resize, to align the template lines to the font.
Please let me know if it needs alterations, additions or ‘fixing’ in any way.
It lives here: https://www.blocklayer.com/writing-guide-paper.aspx