I know you're going to have to look very carefully to see that there is an embossed edge at the top and bottom of the poinsettia card below. In this case, we've used a heavier vellum which didn't crack when we embossed it. If you're using a lighter weight vellum, the trick is to sandwich it between a couple of sheets of computer paper before you put in into your embossing folder. When you protect your thinner vellum like this, you are less apt to have rips in your image. You'll want to experiment with your particular folder and how many sheets of protective paper you need on your vellum.
I love the intricate line design in this poinsettia from Penny Black. We were able to leave this without a lot of colouring, because the design is so complete on its own. These are the type of stamps that allow you to make quick yet elegant cards, which we all need this time of year. The embossing powder we used is called Moonstone from Stampendous. It is a lovely warm champagne colour. I hope you are starting to collect your thoughts about your Christmas card designs. It's never too early!