Question about printing art for SE stick

I went to a local printing shop today to print out and do a lamilabel type thing to my new art for my SE. But when I got home , the art was too small. If i go to Kinkos can they print it out how it’s supposed to be or do I have to use regular ass paper.

You were to tell them print 100%, No Scaling, 300 DPI.

Alright, thanks for the help.