When you come across a project that you like, you can like it and leave feedback for the creator. If commenting is enabled on the project, you and others will be able to leave compliments for the creator. When you like or comment on a project the creator will be notified and when other users like or comment on your projects you will be notified.
On the project's overview card, you can see how many likes the project currently has and like the project.
To like the project, click the Heart icon .
To view the project and leave additional feedback, click the project name .
If commenting is enabled on the project, you can view and leave comments below the project window. Type your comment in the comment field  and then click the Add Comment button .