Jeulia will inform you via an email once your order is shipped out. Log into your account, then you can find the shipping by these steps "My Orders->View Details->Track". Also you can send an email to ask about shipping.
Yes, contact Customer Service (Email: service@jeulia.com) to make any changes to your shipping details. Keep in mind that an address can only be changed if the order has not yet shipped.
In some cases, there will be VAT or custom duties levied by your destination country. The recipient must pay additional charges for custom duties or taxes. Custom duties and taxes vary from country to country.