I posted this comment on another thread before:

The 3 most common options are through:

• Work - you need a company based in your destination country to sponsor you. Apply for jobs that offer sponsorship and relocation support. Or work for a company in your country that has an office in your desired destination, and ask to be relocated.
• Education - attend university in your desired destination.
• Marriage - fall in love with a citizen of your desired destination and get married. - Obviously this does not apply in your case.

You’ll have to get in through a visa based on the above categories, then apply for permanent residency once you’re in. Only after a few years of being a permanent resident can you apply for citizenship. Note that this can take years depending on the category and the country you’re from.

As for the license-to-practice thing, make sure to do your research on the requirements in your destination country, because it might be easier if you already have some credentials on the get-go; or you might need to actually earn credits there an not just go for the exams. Also, you have to check if they even recognize the licenses that you get in the US, otherwise it will be a waste. Good luck.