I used to write kanji before taking my 9-month hiatus and had two different ways of doing it.
The first way was inspired by someone else who shared their study tactic in a different post where you write down the items you get wrong during every review. However, unlike the sample he provides in his post my notebook was more like @simias ’ as he shared above. But it also includes the way it’s read and the meaning at the very end of the line. The reason why I started it was exactly for the same reason simias did because I was mixing up similar looking kanji.
I accompanied that practice with another one, where I would learn how to write kanji that I’ve already burned. I started this in a different notebook because I took up the Book of Shame exercise a bit later when I realized I wasn’t learning how to write any of the items already burned which were the really basic ones. This one was just for fun though because I actually like writing kanji 
If you’re using scripts for WK, what was really useful for me while doing this exercise was the [Userscript] Stroke Order Diagram which allowed me to see the stroke order for kanji items. Would be even more useful if they did it for vocab items too though!
I might start the practice again once I get to level 21, which was where I was before resetting. Best of luck on your kanji writing journey and I hope you enjoy it as much as I did! 