@Hassey it comes down to how you tie the square knot on top of the other strings. If you follow the tutorial by @ponotama, she makes the 'figure 4' with the lightest string (the colour of the shell), this way the lightest string is between the dark outline. If instead, you make the 'figure 4' with the dark string, this will be between the light outline. You can also just turn around the bracelet before making the sea shell, since the colours are inverted on the 'backside' (you can see this in the photos where the bracelets are tied in a circle). Hope this helps! 😄(otherwise let me know, I'm always happy to help!)