Love how they turned out, could be easier to peel off

The design of the stickers turned out exactly how we wanted them. The colours, fonts and sizes were perfect! However, I would appreciate it if in the future the stickers were a little easier to peel off from their backings. We were giving these out as a promotional item, and most people needed help (i.e. longer nails) to un-peel them. Perhaps a perforation of some kind on the back, in the middle of the peel could be helpful?