I have several Clearly Besotted stamp and die sets and lining up the dies was a nightmare until I found the method that is described in the video on this blog post.
http://catherinepooler.com/2014/11/1...ly-every-time/
1. Cut a mask with the die on a spare piece of card.
2. Stamp the image.
3. Place the mask over the image and tape to keep in position.
4. Place the die over the image in the space created by mask and die cut.
Works perfectly every time!