Most Helpful Girl
It depends on the reason ..
a) If you lack skills then you need to repeat and repeat until you get it right ! .. My sister was really ignorant with these stuff and in almost a year she became a pro .. and she is just 15!
b) If your hair doesn't curl .. then you and I share the same issue. My hair is so straight that if I curl it , it ends up straight in a half an hour !.. However.. what really works for me .. is taking my hair and dividing it in two parts ( up and down , or left and right .. but up and down are better since I can manage the volume and stuff ) .. and I twist them in a bun .. and leave it for as much as possible .. sometimes I do it at night and take it off in the morning .. I get perfect loose curls.. but still I have to spray a ton of spray to make it stay on for at least a day .. this really works :) .. it's the same idea as braiding but I don't like braiding .. it doesn't come out in curls!
c) If you have not the correct tools. My sister has one straightener and she does everything with it ! .. again I repeat .. it took her one year to know how to handle it perfectly! .. so you can invest in a straightener ( which does curls as well) or a bigger hair curler .. you can also get those plastic rolls.. they work too but are harder to use imo ..
Good luck :)