Drag the Blue Ball to your scheen and choose the “i” icon
Remove the picture or the camera
Click on the “image” icon
Add the link to your GIF image in the browser bar or click “browse” to upload your own image.
If you use your own gif image, make sure you choose “original” so you get the transparent background if your image has that.
Change the size of the image to fit
Play with the 3D effect to make the image fit in your scene
click save and publish
here’s an example of the result:
You can get great GIF images here:
Try looking for gif images with a transparent background for the best result!