In my opinion I think Sakura's hair is very well designed. The style is different compared to some animes and characters in Card Captor Sakura. But her hair some how reminds me of Naru's hair from love hina, a tid bit of resemblence don't you think? the bangs on the side and all? Except Naru's hair is long and a lot more detailed.

Meiling Li

Meiling's hair is black and long. She has short bangs in the front and her hair is very straight. Meiling's hair is divided into sections, a few short strands in the front, on the side its one layer and at the back long hair. Everyday Meiling would take her short layer at the sides and tie them up, then she would do the same for the long back layer, dividing it in two. She then takes the short divided layers and make them into a round ball.

Meiling's short bangs in the front also does not end in a point, it's like the rest of her hair, running down smoothly and straight.

Meiling's hairstyle is close to Usagi/Serena's Hair. It doesn't end in a point like Usagi's. Instead its like regular hair, ending smoothly down her shoulders and a little more to her arms. Meilings buns are bigger than Usagi/Serena's and it's a little more flat on the top. The hair hanging down is much thicker than Usagi's. Also I believe Usagi doesn't have different layers for the bun, while Meiling has 2 layers, shown in the picture, one for the bun and the other one for the hair hanging down.
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Tomoyo Daidouji

Theres not much to talk about Tomoyo's hairstyle. Tomoyo's hair is silver/grey which ever you prefer to call it. Her long silver/grey hair is wavy at the bottom, thick and curly. She has short bangs in the front that don't end in a point like Meiling's, instead it ends smoothly down like normal hair, looking like little straps cut from a sheet of paper.

Tomoyo does a lot with her hair throughout the Card Captor Sakura series, she sometimes ties it into two. She even braided it before into two. But normally she would leave it down and she would have a hairband on, many different colours.

If you look carefully, Tomoyo has a slightish purple in her hair. Tomoyo's hair also has layers like Meiling's hair, but only two. Tomoyo's hair has a thick strand of hair on the sides, it hangs down infront of her shoulders while longer hair is on the back.