See if the skirt is high or low. If high waist should be above the knee, low waist should be below the knee.
1, try to choose a style with a skirt length close to the middle of the thigh.
2, long skirts should choose the length below the knee and above the middle of the calf. In short, we must avoid skirts that just reach the knee and just get stuck in the calf.
3, the choice of long skirt is much simpler, you just need to choose the length that can expose your ankle.