Cant get custom Targets to work

Hi, so im trying to get a couple custom cylinder targets to work but nothing i have tried so far has helped.I whipped up the targets in photoshop, uploaded them to the target manager and went through that whole process, than downloaded the package exported from the target manager, loaded up the cylinder target sample scene, imported my target package from the target manager, set the correct target database and cylinder target on the object in the scene but it still doesnt work.I printed out the images and wrapped them onto a couple gadorade bottles.Here they are. Are they not good images for this purpose? is there some vital step im missing? I can get the default soda can target to work but not my own.