If you glitched the cards then you likely already had two almost perfect images. It may of been best to start with those rather than attempt to use an unknown image.
It really depends on whether and how the cards were de-subscribed before you glitched them. If they still had valid boxkeys on them then they were likely very good starting points for any image you wanted to build - just a matter of adding a few extra tiers and maybe fixing some dates etc....