TheDarkDemon

But how to submit animations...

Try to read the rules, its usually helps
if you are still confused, you need to export the animation as a gif. and post it in a file/image hosting sites such as imgur, sta.sh, discord, etc.
after you upload it in there, copy the image link(right click) of the image and paste it here, to show it right away, use [img]Link[/img] to show the animation right away.
If you're still confused by this, try to see other's thread and quote it(top-right corner) and see how they put it all together.
Ps: you could only post 1 thread here, if you have new animation(s), edit it.(doesn't apply on freestyle)