Let me show you how to add your own photo to an Excel chart. First gather your data and click on one of its cells. Click the insert tab–>chart like the screen shot below.
After selecting a chart type, modify the chart layout using the command buttons on the chart tools contextual tabs.
Now click the part of the chart like the plot area as I did here. Click the format tab–>shape fill–>picture. And then you browse your computer files for a photo.
And the final result after browsing your computer for a photo. I picked a photo I took back in 2010 of the Sangre De Cristo mountains in New Mexico.