I got mixed up and used 30 base strings instead of 29. If you want to make the base strings an even number that way what I did was to add an extra knot on the left side of the pattern. In the background part, the background colour and in the foam part, the foam colour. When you get to the end of it I did the three last first knots (if u know what I mean) the same colour, which in my case was the dark one. I hope that helps!! It was a really nice pattern by the way!