Well jasonlian, I clearly mentioned that I am not sure about it, so its not my fault if the link was not the right one. I just gave it a shot and forwarded a link that I thought might be helpful.

I did find some exhibitions for you. Check this link - https://tucsonbotanical.org/exhibit/origami-garden-2/. I couldn't figure out much as frankly speaking, I did not really take the efforts to go through the entire article, but take a look as I think it does suggest an Origami exhibition right at the end of the article.

Oh, it's really good to hear that more and more people are indulging in this creative art. OliviaOrigami, I would suggest that rather than advertising your work through an exhibition, you should upload videos of your origami art, you know, like a "How to do" learning video or something. With the way Youtube videos are going viral today, I guess there's no better way to reach out to people and showcase your passion. And as you have reached this phase through tutorials, so it is your duty to educate others through this medium as well. Thanks and Cheers.