This has been mentioned somewhere else in the comment thread, but if you want to improve your handwriting, a good way is to use a fountain pen. My handwriting

This has been mentioned somewhere else in the comment thread, but if you want to improve your handwriting, a good way is to use a fountain pen. My handwriting is immensely better with a fountain pen than with ballpoint or gel pens; I suppose partly because the fountain pen forces you to an optimal position and angle (it's much more inflexible about that, you can't just push it against the paper in any angle and expect it to write), and partly because it provides a smoother experience and feedback. You don't need to go overboard, the typical €20-ish Pilot Metro with medium nib or similar is more than enough.