You've got lots of great layers, maps, and apps out in the ArcGIS Online world, but if you really want your work to be seen and used by others, try hosting it in the Living Atlas of the World. It's a home for items that have gone through a quality check so that you can know that you're seeing the best work out there.
Esri created a Contributor App which makes it really easy for you to nominate your items into the Living Atlas. I created this short video to show you how and why you should use this app. Enjoy!