Sculpture technique
 

Can anyone tell me how they sculpture the stamped image and make it look 3-D?

Basically, you just stamp and color several of the same image, then cut out different parts of the images and layer them using adhesive, dimensionals or a combination.
You can PM the creator of a specific card for detailed instructions, and, quite often, you'll find the directions in the card's recipe or in the comments.

sounds just like paper-tole. I'll have to look for some examples.

Do you mean Embossing paste?

Check out Happy Hearts gallery---she has beautiful examples--she is one talented lady!!

Could you post a link to the card(s) you had in mind? Layers of paper cutouts is one idea that comes to my mind. Embossing paste is another. And, fun foam still another. Unless we are all looking at the same picture, we will probably send you off on a tangent totally unrelated to what you hope to achieve.