The brands you have worked with will appear on your View Profile so be sure to include all of the brands you have worked with! The information will be populated from the work history section of your profile so it is important to add as much information as you can to accentuate your profile.
You will also see the details of the brands you have worked with on your work history so it is important to include all of the important information relating to your roles and experience.
Some of the points you should include have been listed below:
Dates worked with the brand
Type of contract
Description - you should add all relevant information about your role, for example specific tasks you participated in, your day to day role and skills learned.
If you have used the LinkedIn syncing option please be sure to check all of the information is complete and in the correct place.
For more information on syncing your LinkedIn profile please go to: http://help.dweet.com/en/articles/4476661-syncing-with-linkedin