First, thanks so much, I’m glad you enjoy them! :D
I’m assuming you mean how to upload them? It sounds like you already have the gifs made. For it to work, you have to have a banner thing. Example of a banner: So don’t forget that. I’ll just explain it using pictures. c: I hope this helps! :D

1. Click on the photo upload button.

2. If you are uploading 9 gifs (Not including the normal jpg banner) click ‘add another photo’ 9 times. When you’ve clicked it 9 times it should look like this, (If you are only uploading six gifs, excluding the jpg. banner, only click the button SIX times.)
3. If you are doing 9 make sure this is selected(this is what makes it successful):
If you’re doing 6 make sure this one is selected:
4. Now, upload the banner in the first slot, then in the remaining slots upload each gif.

And that should be it! If you want to see how it looks and make sure you have everything right before uploading it (I recommend this) you can save it as a draft first, view it in your drafts, then click publish if everything is up to your standards. :D I hope this helped and good luck. ^-^ And I’m sorry this took so long to answer, I’ve been busy with band camp. ^^