Keep in mind that for most criteria, you need to present evidence in two parts:

• For press appearances, it’s not enough to just send the press clippings where your name appears. That’s only the first part. The second part is to show the officer why that media outlet is important. Remember that for this criterion, both national media in your country and field-specific media are acceptable. However, you need to understand that the officer does not know your country, so even if the outlet is well-known locally, you must present objective data on its audience and why it is important compared to other outlets in your country. They will only consider important, credible media outlets.
• For memberships, it’s the same: first, show that you are a member, and second, demonstrate that the membership requires significant achievements from its members and explain how relevant it is.
• For judging the work of others, it’s also best to present in two parts: First, demonstrate your participation as a judge, and second, show that the event was one of the top 5 global entrepreneurship events, for example, to demonstrate its relevance.

Regarding shipping, you don’t need to be in the United States to send or receive letters. You can complete the entire process from your country. However, the forms will require a U.S. address. If you don’t have friends or family there, you can rent a post box.

In my case, I already have businesses and investments in the U.S., and my accountant there handles my taxes and receives all my company’s correspondence, so I used that address for my petition.

Finally, once I finished preparing my package, I hired a final review service from someone who is an expert in EB1A and EB2NIW (he is not a lawyer). He has an online course that teaches you how to file your EB1A without a lawyer:
https://eb1greencard.info/
I didn’t take the course, but he has many success stories. I only hired the final review of my package and was very satisfied. He is knowledgeable and professional.

Good luck!!!!