I recommend you can replace “other people” with the actual people you borrowed blueprints from by checking out the username underneath the blueprint and credit them because, just saying, in the real world, copyright creators are still sensitive despite people like me or you for just saying “credit to some people”. But this is some EXTRA advice in case since you are criticized by several people for “borrowing”, or in some cases “stealing” another person’s property. So, hope that helps in case you need a short lecture on copyright infringement law