Do you ship internationally? If so, where and what has your experience been?

Hello, Nicole–We live in the U.S. now but are planning to retire to Portugal later this year. I hope to continue to sell paintings on DPW and expand shipping to Europe. In your experience, does shipping from one EU member country to another make it any easier? Or, does each country have unique postal & customs rules? I often read in ex-pat Facebook groups how difficult it is to receive packages from the U.S. through Portuguese customs but have never heard about outgoing shipments from Portugal to other EU countries. Guess I’ll find out when we finally get there!