cheating is such a negative word; you are not doing anything negative so don't diminsh your creativity. using those is no different than using any printed fabric, no need to send credit away from your work. i would think you would only include something on a tag if you purchased some hand embroidered block that aunt ... made and they are selling off her stuff...but machine made bulk blocks...that is the same as buying Michael Miller novelty blocks and using them. they were created for you to add your own creativity to. so go for it totally guilt free ! :)