No problem.
What I usually do is use the deposit payment as the value of the piece. Or if shipping is high enough, I break up shipping in 2 payments and have 1 payment declared as the value of the piece and the other as shipping cost.
What it boils down to is that you need to have 2 payments that you can show if customs asks for proof of payment, that are the same as the declared value and cost of shipping.
Hope that helps