going to add the clans now, also add a new section to the blank clan sheet, something like a req (requirement) and a chakra header.
the req will list what kind of requirements are needed for the clan to use their secret tricks, jutsus and so on, such as a dual element user like ice would require water chakra and wind.
the chakra header will list the charka's found in the clan, the dual ell's will be clear but a clan like uchiha that always possess fire chakra..., its not listed in their natural abilities and its not required but its part of them so...

I also plan to add a poison user clan who always have water and wind chakra for example.