Click Hire Retoucher on the retouchers page. Upload the pictures you need done and describe desired price and turnaround time.
A private message board will be become available for you and the invited retouchers to discuss details. Retouchers will be able to accept your invitation or get back to you with their counter price and turnaround.
You may also short-list your favourite retouchers using star button and invite them from My Retouchers page. You may invite up to 15 retouchers to one private order.