You have shown invoice for local sales format, but you have not shown invoice under foreign currency duly multiplied with custom exchange rate. For export outside india you have prepare invoice to presented to customs which should be in foreign currency, to arrive in indian rupees custom exchange rate should be shown, the price per piece of goods to be exported can be on FOb or C&F or CIF basis, so on what GST need to charged? on FOB Value? C&F  or CIF Value? how to show in invoice exact FOb value and PMV Value for customs?