I saw a similar card on Pinterest and thought I would try one of my own. It is very quick and easy and turns out to be very lovely.
On the top layer of the card, I punched the square out about 3 times. I just slid my punch in as far as it would go and punched so that the hole would be centered from the top and bottom. I turned the piece over and scored two lines all around the hole using my Simply Scored Tool/
Stamp the image you want onto the base of your card where your window will be. Cover the area with Versa Mark and then Iridescent Ice and heat with your heat gun.
I used the retiring (OH DARN!) Painted Petals Stamp Set (Occasions Catalog) and the SAB cotton twine.
Try this with any stamp set of your choice and see what you come up with.
Don't forget to guess the weight of the box that held my pre-order of new goodies by making a comment below. The picture of what was in the box was posted last Friday, May 22nd. You have until May 31st. The guess that is closest to the box weight receives a prize from me.