This 3-step card (posted HERE) is bigger than the one I've made before--this is my usual size of 6" x 6". Also I've added a little twist as the stairs are now facing you when you open the card, instead of to the side.
Here are the templates for the card base...
PDF template in inches HERE.
PDF template in centimetres HERE.
Decorate as desired.
I'm not doing a tutorial on this one, but am just supplying you with the templates, but you can refer to my tutorial for the smaller card HERE if you're not certain of where to cut, how to fold or where to apply glue.