If you seek to target people outside of your country, your basic option is doing any form of outreach to those businesses. It sounds as if you have a portfolio created and you know your industry, so pitching a call with them is your hardest aspect.
Another option for you would be to find a way to get in front of these international businesses in ways other than cold outreach. It could be ads, networking events, or asking existing clients if they could refer you to international clients.
Hope this helps.
Best Regards,
Landon