"I am a lion's cub and I have a lion's heart"
Ok, here we go dear, it hasn’t been asked yet ;)
From this :
Ok, So you first load your two gifs separately (the wolf A) + (Sansa B)
You resize, set the timeline, the number of frames of gif A must be the exact same number as the gif B
Now gif A and B, we are going to make them as a group:
1) Select all frames / Select similar layers/ Press square button (from frames to a timeline) :
Edit: so people have told me it’s very different in cs6 and apparently it’s this button:
Then Filter > convert for smart filters > ok
Do that for both gifs. Now we’re going to do the actual overlay.
You have the group of layers, you need to put the layers of gif A on top of the layers of gif B (like a psd) drag the group of layers on top of the other gif’s layers:
Then you’re going to use lighten on Gif A (the wolf)
(you can use screen or mutliply or anything that fits, you can also use the eraser if needed to but you need to put a layer on the group with this button:
Add your psd on top of all the layers now and you’re done :D
If you have more questions, feel free to ask ;)