How can I say to non-native english person when your accent indentify him as a non-native?
In spanish would be that: Se nota que no eres español --- In english?

Question

How can I say to non-native english person when your accent indentify him as a non-native?
In spanish would be that: Se nota que no eres español ---> In english?

Answer

"I can tell that you are not a native speaker from your accent" 
"Your accent gives me the impression that you are not a native speaker"

The second would probably seem more polite