Need advice or inspiration for building a wa-shitsu in an American 3bed/2bath house

I lived in Japan for about a year from 2011-2012 doing English teaching; the JET Programme set me up with an old, very small rental house, which, despite being small, had a 12-jou tatami room. Recently, I bought my own home where I now live, in America, and am looking for ideas for transforming some of the space in my American home into a Japanese style room, if possible. There are lots of challenges, for example, small/sparse windows, lack of natural light, small bedrooms, and most frustratingly, none of the rooms are divisible by a standard tatami mats without building up a wood border to fit the mats into (I’m pretty sure you can’t just cut them to fit, as if they were ceramic tiles).

I’m looking for some inspiration for creating a wa-shitsu style space in an American home – tatami, shoji, fusuma, natural colors, wood trim, coffered ceiling – as much as possible, although I realize most of it will not be.

Has anyone done something like this, and can share ideas, photos or links to info or photos?

https://www.reddit.com/r/japan/comments/15cfieo/need_advice_or_inspiration_for_building_a/