So I have a client of mine, a new client I should add, asking for me to send over my Illustrator files for them to edit and make into another piece of artwork. I was slightly weary when I took this client on board as they had been creating their own artwork/labels however they have come to a professional for a reason, right? Anyway, I have created a range of labels for them they're happy with them and are awaiting news from Tesco as to which products out of the range they'd like to take. In the meantime, they have asked me for the .ai files which I do not want to give. They haven't paid me yet, I have no qualms that they will pay me when the time comes but at this stage no invoice has been sent as the job is not complete. Perhaps this is a lesson learned really, that I should state to all clients when taking on new contracts that the original artwork files stay my property unless they want to pay an extra 'x' amount to gain the usage of these files. Of course I've had this situation in the past few years whilst working for myself, however it's always been a miniscule file/contract compared to the scale of this. My question to you is how to answer their request? Bearing in mind I don't want to give them the files.... and do you have a set document you send out to new clients stating that artwork remains your property etc and that time paid is only for web or print ready files? Any help would be great...Thanks!