Need help TC unbalanced counts

I need an example. Is it a must TC unbalanced counts starting the count at zero, cause I start deck running count -12.

By example after the first round.....I start at -12, counts runs towards -6 and 1/2 deck is played.

Using true edge 6/11 = around 1/2% more negative. That means we are about even with the house. Assuming Zero = TC of 2
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Using the truecounting method.

Using the above example..means 6/6 (whole decks rounded)= TC 1 means we come to the same answer.

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I need to know if I got this right!