Just go to Adobe Exchange, click on the link that asks "Do you produce conetnt" and submit your ideas. It takes a while to get them reviewed and approved. Help is available on Adobe Exchange. https://www.adobeexchange.com
If you want to upload to Exchange Clasic there's a link on the right side of the classic page. You'll have to sign up, create an account, and go from there. It's not hard.