profile picture

Ive seen a few people with their profile picture, as what looks like a comparison between what they are (were?) and what they want to look like...its animated, two body pics side by side. how are you guys doing that?? i want to try that to maybe visualize it better. i used to be the weight im aiming for but it would be nice to see a side by side even of the weight/inches ive already lost to stay motivated to keep going.

if any of you could let me know, id appreciate it, thanks!