Yeah, since the poster isn't quite a "new Scratcher," I'll move this over to Questions about Scratch.
As an answer to your question, there really isn't any easy way. What you can do is use some kind of screen recording program, but it's not really very convenient.
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You can use a screen recorder.
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Well, I don't know the link of-by-heart and I will have to get SoulAlly Hanna to give it to you, but if you screenshot each of the costumes and upload them to that site, after picking animation, you should be able to save and upload it. I'll get Soul to give you the link when shes online
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