I was wondering where I can obtain graph paper that is the right size for writing Kanjis while doing RTK.

I've been using regular lined paper but it's so scrunched, I feel like I'm squeezing so many characters into a small space (generally vertically) and I'm not even at the most complex ones. On top of that I'm not sure if my characters are too wide (when they involve two primitives next to each other), or if I'm just being worried and they're actually too narrow.

So can someone list proper graph paper for such a use? To print, or to purchase? Thanks so much!

Check this Genkoyoushi (Japanese Character) Paper PDF Generator.

Thanks a lot!!

You're welcome.

A whiteboard may be a good investment.

Is there an "ideal" size to practice them? Or the default size is already good?

Anywhere near a Daiso zachandhobbes? I buy kanji writing pads there.

You can download an appropriately sized template to print from my website.