You, of all people, should know that you need a CPA license of that particular region to officially practice accounting as a CPA. A CPA in Cali would have to go through whole sets of exams to be a CPA of Florida.

However, that doesn't mean you cannot audit an account. You don't need CPA license to audit. That means, you can goto Nepal and learn the laws (IASB which is slightly different than GAAP) and practice auditing. You just won't be recognized as a CPA. Besides, Nepal doesn't even call them CPA, we call them CAs.