Hi good morning,

I have the opportunity to sell some of my artwork directly to a customer. How goes the issue of copyright in this case?, is it normal that the customer sign a contract with the terms of use of the illustrations?. I'm a bit lost, would appreciate some help.

Thanks.

Yup same here, I have an invoice that basically says I keep all the rights till payment then certain rights expressed on the invoice are transfered.
"The graphic artists guild's pricing and ethical guidelines" includes some pretty decent documents to use as a starting point.

Again, just outline the rights you are selling to them.
Non-exclusive rights of usage, the media they are allowed to use the image in, the print run, time frame etc. etc.
Whatever limitations you want to put on the usage and so on

But if what i want is to sell RF licenses, not sell the right?

A license is essentially just a document that contains usage rules and restrictions, and the buyer agrees to abide by the terms of the license when they purchase a file. You can pretty easily just write your own license document and include that with any files you sell as RF directly to a customer. It can be a text file included with the purchased files, you can have it set up as a page on a website, etc. You might just want to make it a point to say clearly somewhere that by accepting the files, the customer is agreeing to comply with the terms of the license.

I my case the customer sent ME a 2 page contract for usage of MY photo:)   

Why is the customer buying RF directly from you?     You can hardly beat the orice, or?  This is more common when it comes to Rm or full rights

, lol

woow:)