Here's how I did it: first, set column width to 26.86, and row height to 144. Then click the cell where you want the picture to go and click the Insert tab, then the Picture button. If you want to insert directly from your camera, navigate to the the camera folder and select the picture you want. After you have the picture inserted, right-click on it and select "Size and Properties...". First, in the Size tab, uncheck "Lock Aspect Ratio", then set both Height and Width to 2". Then click the Properties tab and select "Move and size with cells".