Your tekki shodan is quite different from the ISSHINRYU naifanchi kata though from the same source.
But in my experience you stances are solid and I feel the upper body performance is a little rushed.
At times you move onto the next technique before I feel the last technique is completed. That may be a signature of your system but I'd prefer the full strike completed before moving onto the next.
hope that helps,
bushi no te isshinryu
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