knowledge base

Details:

By Compositing, you can juxtapose one image over another image and combine 
both into a single image file with changes.

Select the background image from the Image Editor, 
Click the "Composite" link,
Select the foreground image and click on the control to indicate where the 
upper left corner fo the foreground image should be placed.

This is likely to take some trial and error to position it just right.

The demo shows what this process looks like.