Hi there~~after watching this video on youtube , I needed to share it with you! Several of my customers have purchased the corner punches, and they can be a bit tricky, so please watch this video before you call me frustrated! I found it very helpful and worth the three minutes to watch! There are a ton of cool videos on SU punches and other SU related stuff on youtube. Just type in Stampinup and the whatever you are interested in. Such as Stampinup clear stamps assembly, and so on! Spend some tme, you'll be glad you did!