UI for draft, quote, contract flow

we are looking for ideas for our system how to design the page for Contracts module. what we need here is the UI ideas basically what we do is arrange contracts for our clients we create quotes and send to our clients , once it is accepted and signed we convert the quote to contract and after we receive money for doing this from supplier. so idea is to keep the old contract details and what we offered as quotes and keep the financial side what we received and how much we paid to our users etc.. you can submit your idea anyway suits you but before we accept to pay you for the idea we would like to see mockup.