Be sure you enjoy the process, don't make this a chore.
- Take a calligraphy class, do calligraphy drills - Wear reading glasses - Listen to music (focus) - Know your letters, change your letters - Learn how to connect letters - Slow down - take your time - Practice - the only way to get better at anything - Change it up.Practice for 20 minutes each day.
Do searches on "calligraphy with a fountain pen" -- there is a lot out there.
If I did want to give calligraphy a go with a stub nib, one option would be an Asvine V126 with 1.1mm stub nib. This pen is a Vac filler, $30 on Amazon.
Tom's Pen Info / tom@mmto.org