Tung,
Once you have created your MSI you may simply use the Dashboard (http://appdeveloper.intel.com/en-us/dashboard/myapps) to upload it. Please remember to use your assigned GUID and follow the Validation Requirements:
http://appdeveloper.intel.com/en-us/article/validation-guidelines
Hi Tung,
Hope the answers Brain solves your issues. Please let us know if u need more help.
Regards Suresh