@lele_raine I'm not sure what exactly your question is sadly :/ there are many different ways how you can start a bracelet. You could start in a straight line or you could do triangles ends or something else. If you start in a straight line and you have the beginning of your strings in one big knot to hold them together it's normal that the bracelet curves a bit in the beginning. I assume this is what you meant.
The way I'd segment knot this is to knot the first three rows like a candystripe to the right and the next three rows like a candystripe to the left and so on.
is it supposed to saint in the beginning? I tried watching Marsh video but i don't get it. Are u basically working from the middle to the edges for the whole braclet?