Stamp first and then embossing folder! This gives a great extra texture to your card too.
Here is what I used:
8 1/2 x 5 1/2 card base scored at 4 1/4
4 x 5 1/4 Basic White stamped with Gray Granite wave and sentiment
Run thru the embossing folder and add waves die. Lots of dimension and texture in this one!