Artificial intelligent assistant

What is the meaning of 「...みけんならみけん...」? I'm reading a book on how to draw manga style characters, and I came across this sentence. It is part of a larger block explaining how to make a character look the same from all different angles. > {}{}{}{}{} I think I understand the general meaning of the whole sentence, but the part where it says `` puzzles me a bit. I get that it's talking about where to draw the brow of the face and how far across it goes (``). As I understand it, is something like "being the case that", so I translate `` as "the brow _as the_ brow", but that seems weird to me. How would the brow act as anything other than the brow when drawing a face? My translation must be wrong because it would be redundant to talk about the brow as the brow. What is `` doing in this context?

"Even if it's the same hairdo, you draw keeping close attention on where to part it from, what sort of feeling of the curves, and [for/in the case of] the area between the eyebrows how far across to go of that area, etc."

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> =[for/in the case of] the area between the eyebrows
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>
> =how far across to go of the area between the eyebrows

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