Hello,
I am assuming that you have content currently in English but in an accent such as British English, and would simply like the same content but in a North American accent.
I'm a native English speaker from Ottawa, Ontario. My English accent is similar to a New York accent (geographically we are very close to New York). I'm also a math major, and so I will be able to recognize when an expression or terminology is not commonly used in North America, and offer an alternative.
Please contact me to discuss the details.