I used to make a lot of tall slim cards at one time. I'm not really sure why I stopped, because I think these cards are very elegant.
You start with a square card and fold it in half for the base. I started with an 8x8 inch piece of thick Very Vanilla for this one, so my finished card front is 4x8 inches and will fit in a standard DL envelope.
I kept it very simple for this one - just a bit of embossing and sponging.
Here's how I made it - so quick and easy.
It doesn't take much in the way of supplies. I die-cut the squares but you could easily punch them or just cut them with a trimmer. Instead of the embossed edges you could layer slightly smaller squares - gold foil would look lovely, don't you think?