While working with Barrows Global, I was often assigned to design packaging for Remy Martin. This is one I designed for their 1738 promotion. I worked with Barrows primarily as a production artist, so after designing the package, I also prepared the artwork for print as you can see in the production files below.
This is the final production file that I sent to the printer. As the Ink specs show, the package was printed with only Spot colors and varnishes.
This is the PDF that I sent to the client for design approval. The colors look different than to final print file so that the client could better tell what it would look like when complete.
It's always a good idea to send a quick render of the package, with product in it, so that the client can visualize what the package will look like.