How to Share for Comment
Sharing a design for comment is simple to do by following these four steps.
Step One: Save to Creative Cloud
First, the file must be saved to the Creative Cloud. In the default workspace there is now a window for comments. Simply hit Continue under Save to Creative Cloud.
Another option to save to the cloud is to go under File > Save As and then select the Save Cloud Document button found to the left of the format dropdown.
Another method would be to utilize the sharing icon located in the upper right-hand corner of Adobe Illustrator.