Today's post is just a quick educational post on making print quality cards.
What most people fail to realize is that print quality is much higher than monitor quality (with the exception of high density screens, such as the Apple Retina).
Regular monitors have about 72 to 128 PPI; Print quality has a healthy minimum of 150 DPI, though 300 is often preferred. My 1080p monitor is about 10.5" tall, giving it a pixel density of ~102 PPI.
The printers at The Game Crafter print in 300 DPI; their standard poker card is 2.5" x 3.5", with an extra quarter inch (1/8" on each side) for bleed (which is why my borders seem unusually large around the cards). Multiply the inches times the DPI, and you get the resolution.
If you are planning to have some artwork printed, make sure that your images are large enough to be printed at a reasonable quality. Don't be afraid to make an image larger than your monitor, as (unless you are working on something very small) it will usually have to be.
Make sure to plan your dimensions - both physical and digital ahead of time, so that you get your final works of an appropriate size and quality.