You should probably upload some mock examples, in the least.
As mentioned it is sorta hard to do right now.
As I also mentioned : You dont need to pay until you agree with it. It will all be watermarked so it isnt stolen.
Beside the point: there's no indication on what kind of quality you actually put out. You mentioned you've done work on animated cartoons and adverts; is there anything online, perhaps YouTube, that you could showcase? It's difficult to hire someone who has no evidence of work, know what I mean? Anyone who works in the creative field will have something to put up as a benchmark for what to expect. Even programmers will have a few projects they'll showcase so you know what kind of product to expect.
What I'm proposing is, doing some pretend-work so people can see what you're capable of, if you don't have access to anything else you've done in the past.