1 – Set your desired print size
2 – Set the color profile
From the Edit menu, select Assign Profile
Select Profile and set it to Adobe RGB 1998.
Please note, that selecting any other color profiles could result in a color shift.
Why not CMYK?
Modern digital printers such as the Epson Surecolor Series, use up to 10 different colors to produce the widest color gamut, capturing the most intricate details of any form of artwork. We send RGB files to the printer driver and let it do its magic instead of converting them to CMYK and losing all the vibrant colors before the printing begins.