I like using the Color Box Cat's Eye ink pads for this technique because I get much better control over where and how much color I want to apply to my cards.
Take the ink pad and wipe or drag it along the edge of the card to give it a kind of blended frame around the edge. You can go over it as many times as you want to give the right amount of coverage that you will be happy with.
I have tried doing this technique with the larger, stiffer ink pads and it gives it a more lined effect to the card rather than a nice blended ink effect. I am not saying that it is bad, it is just different. You may prefer that kind of a look.
Here are a few examples of cards with just the image stamped onto the card. I did us a punch on the corners to give it that extra touch.