If you are talking about the license I suppose your draft might well cover the ground. Is this a circumstance where a license is necessary - perhaps the custome

If you are talking about the license I suppose your draft might well cover the ground. Is this a circumstance where a license is necessary - perhaps the customer is asking for one as otherwise they would not be able to re-use you copyrighted code without permission? Still it is important to assert and then retain the copyright if you want to use the code elsewhere - and fortunately that is so very simple to do.