I continue to recommend this app/website/team for your language practice adventures.
Most of my Duolingo practice days have been devoted to refreshing my German, but I have also been using the Japanese course (which I’ve already gushed about).
One thing I especially need is writing practice, so my Japanese notes will be more legible. For this, I’ve recently started using the downloadable writing practice sheets at japanese-lesson.com. I also have a brush pen, which should help with some of the subtle points, curves, and flourishes on the characters, if I ever get good enough to include them!
The site includes writing practice sheets for Hiragana, Katakana, and Kanji. (I’m providing a link to the Hiragana page, but you can easily navigate to the others.)
Studying a language for fun at your own pace is a great thing. It’s great that it is possible, and that so many people are working hard to make studying fun!