@Almali18 this is quite a challenging pattern for beginners but there are plenty of tutorials on YouTube for “alpha patterns” which this pattern is one so once you know how to make alpha bracelets you can come back to this pattern
I used about 11 inches for the base string which looks like a lot but the actual bracelet part took up about 4 and a half inches. I did twisted ties on both ends and both ended up being just a little over 2 inches when they were finished. But it depends how tight u do the twisted ties, it might end up longer or shorter. I hope this helps for reference! (I loved making this pattern it turned out super cute)