You can edit pretty much anything about your project page after it's been published. To edit your project, do the following:

1. Login and go to your project page.

2. Located at the top-right of the page is an Edit button. Click it!

3. This will take you back through the two stages of the project creation process. You will be familiar with these stages as it's the same as when you first created your project. 

The first step is your project content where you can add/remove images, videos and other content.

The second step is where you can edit your title, add tags, software used. You can also add a new featured thumbnail here too.