When you initially sign in you'll be presented with options to upload new content to your profile such as artworks, projects, events, workshops etc. Simply click on a block, complete all of the required information, upload an image and click 'Publish'. You also have the option to add more information and media by clicking 'Publish and continue'.
To manage all aspects of your profile click the 'My profile' tab on your dashboard. On the left hand side you'll see a series of links where you can edit and update existing information - 'About me', 'My artwork', 'My profile image' etc. You can also upload new content from here as well.
Any new content you upload will appear on your profile (please note that some content such as merchandise may take a few hours to appear and will be added when the website is re-indexed). New content will also appear on the Discover page where people can search and filter results based on the type of content. If that person follows you, they can click 'My feed' and it will just present content from people they follow (sign-in required).