If your printout appears really light on paper...don't worry! This is completely normal. Sublimation ink naturally looks very subdued and washed out before you transfer the image. After you transfer the image to your sublimation substrate, the colors should appear as they did in your initial design.
JPPlus has a team of sublimation experts available to help with any questions you may have. Contact Customer Service at email@example.com or at 800-869-7800 Monday through Friday 8am to 8pm CST and they can put you in contact with someone who can help!