Hello. I'm going to be printing some cards at A6 size using one of the most popular online printers. Their website allows me to preview my card on their designer. I'm about to buy an Epson Perfection scanner to scan my illustrations, these will be on the front of the cards. I will need to crop them down to exactly A6 size/ratio after scanning them because I want them to fit on the cards with a little border around them and for the border to be the same all the way around. But I'm not sure how to crop something at the A6 size/ratio, I have no experience with any of this. I can illustrate on paper but the rest is new! I have Photoscape and GIMP 2 at the moment, but I expect the Epson scanner will have software too. Please can someone tell me how I can accurately make the A6 rectangle shape/ratio whilst cropping my images? Thank you for any responses.