Maybe the thing to do, then, would be to have the artist create their work on some kind of paper - not directly on the pickguard itself - and then either send it to Dali or try to recreate his process. Not to volunteer anyone, but this could avoid any pitfalls. Additionally, if the work is created on paper, then it can be scanned and copies made, in case there are issues getting it to adhere to the pickguard.