Amending postage on a sold item "awaiting payment"

[kennedy020255]

Please help!-have sold 4 pairs of shoes to one buyer and need only charge one lot of p&p-how do I alter listing to reflect change as buyer is waiting to pay-thanks to anyone able to advise!

[*guinevere*]

Go to "Send invoice".

On the invoice, delete the postage costs and then type the cost you want to charge in the postage box, if that makes sense.

Do not reset. 

Send invoice.