Unify . . .

I folded my traced Celtic knot in half:

You can see the two halves are not exactly alike.

I drew over the lines with a black marker, shifting one path a bit, and compromising on the other places where the lines didn’t match. I drew over the lines on both sides of the folded tracing paper.

Then, I opened the paper, erased all the pencil lines, and folded the paper again:

This is gonna look MUCH better!! (Just wait until you see what I do with it!)