One problem I was having with this tool was when I wanted to punch two holes in a blank and have them line up properly. You could scribe or draw lines on your blank to be extra precise, but I found a simple tip helps me quickly make these types of punches.
After you've punched your first hole, flip your pliers upside-down so you can clearly see where the second hole will be created! Line up your first hole with the second hole that is cut out of the bottom of the plier, a very easy to see negative-space, and voila! You can punch your second hole.
That's it! I hope you find this hole punching plier tip useful. It definitely has saved me time in creating multiple holes in metal blanks.
See my handmade jewelry creations using this tip at Handmade Jewelry by Peggy Li. I especially love these hammered, brushed and cascading Metal Petal Earrings using this hole punch plier technique.