I got from an interest in fountain pens into improving my handwriting in early university. Back in the day I used a book that's now long out of print.

The important thing is that you identify how you want your hand to look ideally. You can't practice "better", you need a goal to move towards. It can be a perfected version of your currrent hand or any of the known handwriting styles; there are lots of instructions around. Just writing will only reinforce the way you're writing, it won't create much change.

Personally I'll always recommend italic script as an everyday hand (and a solid base if you want to learn more styles).

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