@nishu92 it depends on your gauge when you make alphas, which is how many rows per inch. However, if this is your first alpha, I would recommend making the strings about 18 inches long on this pattern.
@ananya123 umm I think something that helps is to try and make your knots the same size and pull them really tight. Also after every row I try to straighten the knots out and make them even. I hope this could help!