"Put Images On Top" option allows add images to the original image and set them on top.

To put image on top of the first image:

1. Select the image using the button "Load from disk".
2. Press button "Add Image on Top", then select the image which will be added.
3. Tune the size of the added image, select transparency level.
4. Press "Put Image" button for putting the image on top.
5. After all you can save it to disk.

There can be arbitrary number of added images.