No worries, exporting can be a complicated part of the process and is something that is often forgotten till the end. Looking forward to trying it out.
In the future, you’ll usually get a lot more eyes with a web build (and they can be pretty easy to export for most 2d games). To do that, you’ll export the project into a new folder as a HTML build, you then have to compress those files to a zip, and upload to itch. There are a few good vids about it as well - https://www.youtube.com/watch?v=RiQcnVgBhFE