No big mistakes so far, just tags and listings and photos.
I did my first international shipping to Canada yesterday...I found the shipping prices for "first class mail international options" here.
http://postcalc.usps.gov/I was nervous for nothing, it was really easy! I actually over charged by $1.170 and I refunded her that amount via PayPal. I am still unsure about shipping rules for shipping my Jewelry there though, I think jewelry has to be insured, and insurance is not available on then First Class option from my understanding.
Linda
I actually over quoted her $1.70