Hi - I have been reading the FAQs and tips from those of you who tested calculated shipping, thanks so much, I've learned a lot. I just got my first inquiry for international shipping and have one concept I'm not quite getting yet with the calculated shipping. For now, all of my products will fit into the same package size, and I'm using a 10.75 x 8.5 inch bubble mailer. I sell girls dresses, and they are very lightweight so it seems to be cheaper to go first class internationally than any sort of flat rate. I added the envelope size as a custom package size to my calculated shipping profile and am not using the etsy custom sizes. Now I'm editing my product dimensions in the quick edit, but am confused about the dimensions I'm supposed to include. I thought I read somewhere here that I should include the product dimensions (l x w x h) for each item, and etsy would decide which envelope to use. But then I thought I read I should be including the box dimensions here. I don't know what to put for height in either case - the height is very minimal as the bubble mailer is very flat. Also, should the weight for each item be the actual item weight, or the weight of the item in the bubble mailer?