Which would you say please? How would you correct them?

- I know the different jersey (colors) Thats why I can distinguish between teams.
- I can distinguish between asians/the japanese from the chinese and korean.
- I can tell from her hands that she's american./ From/By (looking at) her hands I'd say she's american.

Could you please tell me how to fix this sentence?

- Size 9 shoes is too big for/on me. It's a half size too big. My feet are too small for my height/compared to his height.
- If she looks at me she'll see that I'm look at her.

Thank you
Size 9 shoe is too big for/on me.

too small for

I'm looking
Could you please help me with these sentences?

Thank you
 Philip's reply was promoted to an answer.