3d Paper Crafts

Craft help? I'm trying to make 3D letters using cardboard, and covered with coloured paper??

So I've cut out the letters in color and cardboard, but how do I connect the sides to make it 3D? Letters like S.

You could do it a couple of ways:

1. Cut each letter several times and just stack layers of cardboard until it gets to the height you want, then make colored paper be the last layer; or,

2. Cut each letter once but make it an inch bigger all around, then make little slashes to fold down the sides.
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Amazing 3D Paper Design!